George H. Clark Radioana Collection
In 1888, when I was a lad of seven, I suddenly blossomed out as a scrapbook addict, and for years I gave up boyhood games for the pleasure of sitting in a lonely attic and 'pasting up' my books ... By 1897, in high school, I graduated to beautiful pictures, and made many large size scrapbooks ... Around that time, too, I became infatuated with things electrical, and spent many evenings copying in pen and ink the various electrical text books in the Everett, Mass., Public Library. Clark began collecting material pertaining to wireless or radio in 1902. In 1903 he graduated from the Massachusetts Institute of Technology with a Bachelor of Science degree in Electrical Engineering. During his last year of college he specialized in radio work under the instruction of Professor John Stone Stone and after graduation went to work for Stone's radio company, the Stone Telegraph and Telephone Company, of Boston.
In 1908 Clark took a competitive examination open to all wireless engineers in the United States and entered the civilian service of the Navy. He was stationed at the Washington Navy Yard, with special additional duty at the Navy's Bureau of Steam Engineering and at the National Bureau of Standards.
In 1915 Clark helped devise a classification system for Navy equipment, assigning a code number to each item. This system of classification for blueprints, photographs, reports, and general data, was prepared by Arthur Trogner, Guy Hill, and Clark, all civilian radio experts with the US Navy Department in Washington. In 1918 Clark adopted the 1915 Navy classification system for organizing the radio data he was accumulating. Clark created the term "Radioana" at this time. He began spending his evenings and weekends pasting up his collection and numbering pages. At this time he bound the accumulated material. It totaled 100 volumes.
In July 1919, after resigning from the Navy, Clark joined the engineering staff of the Marconi Telegraph Company of America, which became part of the Radio Corporation of America (RCA) later the same year. His first work was at Belmar and Lakewood, New Jersey, assisting the chief engineer, Roy A. Weagant, in his development of circuits to reduce the interference caused by static (static reduction). Clark and his wife were assigned to the unheated Engineer's Cottage. His wife decided not to stay and left for Florida. Clark moved his trunks of wireless material to the heated RCA hotel at Belmar and spent most of the winter "pasting." As Clark mentions, "From that time on I was wedded to scraps."
After a year of work in New Jersey, Clark was assigned to the sales department in New York, where he devised the "type number system" used by RCA. This type number system, for example, gave the designation UV 201 to the company's first amplifier tube.
From 1922 to 1934 Clark was in charge of RCA's newly created Show Division, which held exhibits of new and old radio apparatus at state fairs, department stores, and radio shows. About 1928 Clark started an antique radio apparatus museum for RCA. RCA's board of directors announced:
Recognizing the importance of providing a Museum for the Radio Art to house the rapidly disappearing relics of earlier days, and the desirability of collecting for it without further delay examples of apparatus in use since the inception of radio, the Board of Directors of RCA has made an initial appropriation of $100,000, as the nucleus of a fund for the establishment of a National Radio Museum. A plan for ultimately placing the museum under the wing of the Smithsonian Institution was coupled with the goal of the Institution's gathering the largest possible library of wireless data.
Around 1933 the RCA traveling exhibition program ended and Clark started classifying his collected "radioana" material. The objects of the museum were eventually turned over for exhibit purposes to the Rosenwald Museum in Chicago and the Henry Ford Museum in Dearborn, Michigan, when space was not forthcoming at the Smithsonian. A list of objects sent to the two museums (with tag and case numbers) is in Series 1, Box A. The "radioana" collection remained under Clark's care during the 1930s, and became of increasing use to RCA. Clark continued to add to the material.
Between 1934 and 1942 Clark was in court many times regarding patent infringements. Clark's wireless data was useful and he testified frequently, for example, in RCA's suit against the United States in the Court of Claims over the Marconi tuning patents and in the Westinghouse Company's suit against the United States over the heterodyne. Patent specifications and material regarding these and other radio industry suits are found throughout this collection.
In 1946 RCA retired George Clark and denied him space to house his "radioana" collection. Clark wished to remain in New York and house the collection somewhere in the city where it would be open at all times to the public and where it would be maintained. He hoped to continue cataloguing the collection and writing books from its information. He wanted to keep the collection under his control for as long as he was capable of using it.
George H. Clark died in 1956 and his collection was subsequently given to the Massachusetts Institute of Technology. In 1959 the collection was given to the Smithsonian's new Museum of History and Technology, where space was available to house it. The collection remained in the Division of Electricity until the spring of 1983 when it was transferred to the Archives Center.
The collection is divided into 223 series.
The materials accumulated in this collection represent the overriding collecting passion of one individual, George H. Clark. The collection forms a documentary record of over half a century of the history of radio, with the greatest emphasis on the period 1900-1935.
The collection includes materials that span the entire history of the growth of the radio industry. It is useful for those historians and other researchers interested in technological development, economic history, and the impact of applications of technology on American life.
In particular, the collection is rich in biographical information on the men who developed the technical aspects of radio and the industry; information on the inception, growth, and activities of radio companies, most notably the National Electric Signaling Company and RCA; and in photographs of all aspects of Radioana.
While most materials document technical aspects of radio, there is much information (e.g. Series 109, 134) on broadcasting and on the early history of television.
The collection, housed in over 700 boxes (about 276 linear feet), was organized into 259 numbered "classes" or series by Clark. Sixty series numbers were never used or were eliminated by Clark and combined with other series. The unused numbers are scattered throughout the filing system. The collection also includes material from series that were eliminated. These materials were never reclassified and are included as an unprocessed series at the end of the series descriptions. The collection also contains material that was never assigned a "class" designation by Clark (Lettered Series: D, E, F, G, H).
The arrangement of the collection is Clark's own; his adaptation of the Navy filing system he helped devise in 1915. Clark periodically revised the filing system and reclassified items within it.
Clark assigned class numbers to types of equipment (e.g. broadcast receivers), systems (impulse-excited transmitters and systems), scientific theories (circuit theory), and topics (company history, biography). Box 1 contains descriptions of the classification system.
When Clark classified an item and filed it he also assigned a serial number. This classification begins with 1 (or 1A) for the first item in the class and continues with successive numbers as items were added. As a consequence, the order of individual items within a series reflects the order in which Clark filed them, not any logical relationship between the items. Clark created cross references for items dealing with more than one subject by making notations on blank sheets of paper placed in related series.
Clark made cross references between series when there was no logical relationship between them; that is, when a person using the collection would not normally look in the series. For example no cross reference would be made of an engineer from series 87 (portraits) to series 4 (biography), but one would be made from series 87 to series 142 (history of television) if the item showed the engineer, say, working on a television installation.
Clark created the insignia "SRM" as the sign on the bottom of all sheets of paper numbered by him for binding. SRM stood for Smithsonian Radio Museum. This replaced the earlier though not greatly used sign "CGM." For a time about 1930, the class number on each sheet was preceded by these: "C.G.M.", for Clark, Martin, and Goldsmith, the earliest contributors to what would become the Clark Radioana Collection. After about 1933-34 Clark used C.W.C. for Clark Wireless Collection.
There are many photographs located in most series throughout the collection. But there are also three exclusive photographic series. Lettered series A, B, C. See index; and also series descriptions under lettered series.
Collection items available for reproduction, but the Archives Center makes no guarantees concerning copyright restrictions. Other intellectual property rights may apply. Archives Center cost-recovery and use fees may apply when requesting reproductions.
Collection is open for research but a portion of the collection remains unprocessed and is stored off-site and special arrangements must be made to work with it. Contact the Archives Center for information at archivescenter@si.edu or 202-633-3270.
Gloves must be worn when handling unprotected photographs, negatives, and slides.
Introduction
At the end of the nineteenth century, when Guglielmo Marconi began his first wireless company, Western Union, Postal Telegraph, and the American Telephone and Telegraph Company (AT&T) were the major enterprises in electrical communications. General Electric, Western Electric, and Westinghouse were the major producers of electrical equipment. All these earlier developments set the stage for the expansion of the radio industry.
General Electric, which dominated the lighting industry, was formed in 1892 as a merger of the Edison and Thomson-Houston companies. It was active in building central power station equipment; controlled nearly all the important early patents in electric railways; took a leading part in the introduction of trolley systems; and was the principal supplier of electric motors. Westinghouse promoted the alternating current system and installed the first AC central station in Buffalo, NY, during the winter of 1866-1867. After years of patent litigation, in 1896 GE and Westinghouse agreed to share their patents on electrical apparatus.
American Bell Telephone Company purchased Western Electric in 1881. Western Electric had a strong patent position in telephone equipment and in industrial power apparatus, such as arc lamps, generators, motors, and switchboard equipment.
Until RCA was formed in 1919, these established electrical companies played no active part in the early development of the American radio industry. They were in difficult financial positions, reorganizing, or concentrating their efforts and resources on improving their existing products.
The revolution in "wireless" technology, which began in earnest after 1900, centered in New York City, home of the Lee de Forest and American Marconi companies, and in Boston, headquarters of John Stone Stone and Reginald Fessenden.
Information in this section was compiled from the Clark Collection; the Invention and Innovation in the Radio Industry by W. Rupert Maclaurin, Macmillan Company, New York, 1949; and Radio Pioneers, Institute of Radio Engineers, Commemorating the Radio Pioneers Dinner, Hotel Commodore, New York, NY, November 8, 1945.
Lee De Forest (1873-1961), inventor of the three-element vacuum tube or triode (1906) and the feedback circuit, was one of the first Americans to write a doctoral thesis on wireless telegraphy: "The Reflection of Short Hertzian Waves from the Ends of Parallel Wires," Yale University, 1899. The grid-controlled tube or audion of De Forest was first a radio detector, 1906-1907; in 1912 was adapted to an amplifier; and later to an oscillator. When it was perfected as a high vacuum tube, it became the great electronic instrument of electrical communications.
De Forest began work in the Dynamo Department at the Western Electric Company in 1899. Six months later he was promoted to the telephone laboratory. In 1900 De Forest went to work for the American Wireless Telegraph Company where he was able to carry out work on his "responder." However, after three months when De Forest refused to turn over the responder to the company, he was fired.
In the following year De Forest had a number of jobs, was active as an inventor, and created numerous firms to manufacture his inventions. In 1901 De Forest joined with Ed Smythe, a former Western Electric colleague and a collaborator in his research, to found the firm of De Forest, Smythe, and Freeman. Between 1902 and 1906 De Forest took out thirty-four patents on all phases of wireless telegraphy. The responder that he had been working on for so long never proved satisfactory.
The numerous De Forest companies, reflected his many interests and his inability to carry one project through to a conclusion. Unlike Marconi, but similar to Fessenden, De Forest had great inventive skill which resulted in a great number of companies; but none lasted long. The original partnership of 1901 led to the Wireless Telegraph Co. of America (1901), the De Forest Wireless Telegraph Company (Maine) (1902), and the American De Forest Wireless Telegraph Company (1903), to name a few.
The American De Forest Wireless Telegraph Company was incorporated after De Forest met a stock promoter, Abraham White. While many stations were built by this company, many never sent a message due to static interference. In 1907 two speculators from Denver with large holdings of company stock put the company out of business. The assets were sold to a new company that these speculators organized, the United Wireless Telephone Company. De Forest was forced to resign. He took the triode patents with him.
De Forest joined with one of White's stock salesmen, James Dunlop Smith, and together with De Forest's patent attorney, Samuel E. Darby, they formed a new corporation, the De Forest Radio Telephone Company in 1907. This company set out to develop wireless communication by means of the radio telephone.
In January 1910 De Forest staged the first opera broadcast, with Enrico Caruso singing. The Radio Telephone Company went bankrupt in 1911 following an aborted merger with North American Wireless Corporation. In 1913 he reorganized the company as the Radio Telephone and Telegraph Company and began producing the triode.
The Marconi Company brought a patent suit, claiming the triode infringed on the Fleming valve to which it had rights. In 1916 the court decided that Marconi had infringed the three element De Forest patent and that De Forest had infringed the two element Fleming valve. The result was that neither company could manufacture the triode.
In 1920 RCA acquired the De Forest triode rights through cross-licensing agreements with AT&T which had recently purchased the rights to it. De Forest's company was no match for GE, Westinghouse, and RCA. The De Forest Radio Company (1923) went bankrupt in 1928, was reorganized in 1930, and went into receivership in 1933. RCA eventually purchased its assets.
Guglielmo Marconi (1874-1937) came from a wealthy and well connected Italian family. He was able to spend his time developing his inventions and following his own course of action. Marconi spent his entire life developing wireless communication into a "practical" reality. In 1905 Marconi invented a directional antenna. In 1909 he shared with Karl Ferdinand Braun the Nobel prize in physics. And in 1912 he invented the time spark system for the generation of continuous waves. The principal patents in his name were improved types of vertical antennas; improved coherer; magnetic detector for the detection of wireless signals; and improvements on methods of selective tuning. Two other inventions of great importance to the Marconi companies' patent structure were the Oliver Lodge tuning patent and the Ambrose Fleming valve.
In 1895 Marconi made the first successful transmission of long wave signals. The following year he met William Preece, engineer-in-chief of the British Post Office, who was interested in inductive wireless telegraphy. This meeting led to the formation in 1897 of the Marconi Wireless Telegraph Company Ltd. In 1898 he transmitted signals across the English Channel. In 1899 an American subsidiary was formed. The various Marconi companies were the dominant enterprises in both British and American wireless until 1919 when RCA was formed.
From a business standpoint, wireless did not become profitable until long distance communications were accomplished. On December 12, 1901 in St. John's, Newfoundland, Marconi received a telegraph signal in the form of repetitions of the Morse telegraphic letter "S" transmitted from the Marconi station at Poldhu, Cornwall, England. This success, however, was met by opposition from vested interests, particularly the Anglo-American Telegraph Company whose cables terminated in Newfoundland.
So as not to restrict his company's future to one front alone, Marconi decided to exploit the field of communication with ships at sea. In order to control this field he decided in 1900 to lease his apparatus rather than sell it outright. This strategy did not work. Competition developed in Germany (Telefunken Corporation) and the United States (American De Forest and its successor, United Wireless) and Marconi was forced to sell rather than lease apparatus to the navies of various countries. He nevertheless retained numerous restrictions. This led to further friction. At the height of this debacle English stations worldwide refused to communicate with ships without Marconi equipment. This absurd and dangerous situation had to change and coastal stations opened up to all senders in 1908.
Marconi's system was based on spark technology. He saw no need for voice transmission. He felt the Morse code adequate for communication between ships and across oceans. He, along with most others, did not foresee the development of the radio and the broadcasting industry. He was a pragmatist and uninterested in scientific inquiry in a field where commercial viability was unknown.
For these reasons Marconi left the early experimentation with the radio telephone to others, particularly Lee De Forest and Reginald Fessenden.
Canadian-born Reginald Fessenden (1866-1932), one of the principal early radio inventors and the first important inventor to experiment with wireless, left the University of Pittsburgh in 1900 to work for the U.S. Weather Bureau. There he invented the liquid barretter, an early radio receiver, and attempted to work out a means for wireless transmission of weather forecasts. After a squabble over patent rights, Fessenden resigned in 1902.
The National Electric Signaling Company (NESCO), primarily intended to support Fessenden's work on wireless, telegraphy, and telephony, was formed by Fessenden and two Pittsburgh capitalists, Hay Walker, Jr. and Thomas H. Given. It began as an inventor's laboratory and never proved successful as a business venture.
Fessenden recognized that a continuous wave transmission was required for speech and he continued the work of Nikola Tesla, John Stone Stone, and Elihu Thomson on this subject. Fessenden felt he could also transmit and receive Morse code better by the continuous wave method than with a spark-apparatus as Marconi was using.
In 1903 Fessenden's first high-frequency alternator needed for continuous wave transmission was built to his specifications by Charles Steinmetz of GE. In 1906 Fessenden obtained a second alternator of greater power from GE and on Christmas Eve broadcast a program of speech and music. The work on this alternator was given to Ernst F. W. Alexanderson. It took years for Alexanderson to develop an alternator capable of transmitting regular voice transmissions over the Atlantic. But by 1916 the Fessenden-Alexanderson alternator was more reliable for transatlantic communication than the spark apparatus.
Fessenden also worked on continuous-wave reception. This work arose out of his desire for a more effective type of receiver than the coherer, a delicate device that was limited by its sensitivity on a rolling ship at sea. In 1903 he developed a new receiving mechanism - the electrolytic detector.
As his work progressed Fessenden evolved the heterodyne system. However, due to faulty construction and the fact that it was ahead of its time, heterodyne reception was not fully appreciated until the oscillating triode was devised, thus allowing a practical means of generating the local frequency.
Between 1905 and 1913 Fessenden developed a completely self-sustaining wireless system. However, constant quarrels between Fessenden, Walker, and Given culminated in Fessenden's forming the Fessenden Wireless Company of Canada. He felt a Canadian company could better compete with British Marconi. As a result, his backers dismissed Fessenden from NESCO in January of 1911. Fessenden brought suit, won, and was awarded damages. To conserve assets pending appeal, NESCO went into receivership in 1912, and Samuel Kintner was appointed general manager of the company.
In 1917 Given and Walker formed International Signal Company (ISC) and transferred NESCO's patent assets to the new company. Westinghouse obtained majority control of ISC through the purchase of $2,500,000 worth of stock. The company was then reincorporated as The International Radio Telegraph Company. The Westinghouse-RCA agreements were signed in 1921 and International's assets were transferred to RCA.
The development of the radio industry accelerated after 1912. This was due to several factors, the most important of which was the passage of legislation by the US government requiring ships at sea to carry wireless. This created a market incentive and spurred the growth of the industry. Also, with the outbreak of World War I, the larger electrical companies turned their manufacturing output to radio apparatus, supporting the war effort. Three firms were prominent in this industrial endeavor: AT&T, GE, and Westinghouse.
AT&T's early contributions to this effort centered on their improvements of De Forest's triode, particularly in the evolution of circuits, the redesign of the mechanical structure, and an increase in the plate design. The importation of the Gaede molecular pump from Germany created a very high vacuum. The resulting high-vacuum tube brought the practical aspects of the wireless telephone closer to reality. By August 1915 speech had been sent by land wire to Arlington, Va., automatically picked up there via a newly developed vacuum-tube transmitter, and subsequently received at Darien, Canal Zone. By 1920 AT&T had purchased the rights to the De Forest triode and feedback circuit, and had placed itself in a strong position in the evolution of radio technology.
GE centered its efforts on the alternator, assigning Ernst F. W. Alexanderson to its design, and on further development of vacuum tube equipment for continuous wave telegraph transmission. By 1915 Alexanderson, Irving Langmuir, William D. Coolidge, and others had developed a complete system of continuous wave transmission and reception for GE.
As can be seen, both AT&T and GE were diverting major time and expenditures on vacuum tube research. This inevitably led to patent interferences and consequently, to cross-licensing arrangements.
Westinghouse was not in the strategic position of GE and AT&T. Nevertheless, during the war it did manufacture large quantities of radio apparatus, motors, generators, and rectifiers for the European and American governments. Postwar moves led Westinghouse into full partnership with the other two companies.
By the end of the war, all three companies had committed significant resources to wireless. They were hampered internationally, however, by the Marconi Company's dominant status, and in the United States they were blocked by opposing interests with control of key patents.
The US government also was concerned with this lack of solidarity in the wireless industry and over the British domination of the field worldwide. This impasse set a fascinating and complicated stage for the formation of the RCA.
Owen D. Young, legal counselor for GE, was instrumental in breaking the impasse. Through an innovative and far-reaching organizational consolidation, Young was able to persuade British Marconi that persistence in monopoly was a fruitless exercise, because of the strong US government feelings. Marconi, realizing the harm of a potential American boycott, finally agreed to terms. GE purchased the controlling interest in American Marconi, and RCA was formed. Young was made chairman of the board of RCA, while Edwin J. Nally and David Sarnoff of the old American Marconi were appointed president and commercial manager respectively.
On July 1, 1920, RCA signed a cross-licensing agreement with AT&T. The telephone company purchased one half million shares of RCA common and preferred stock for several considerations -- the most important being that all current and future radio patents of the two companies were available to each other royalty-free for ten years. Many provisions of these agreements were ambiguous and led to later squabbles between the RCA partners.
In May 1920 Westinghouse, which had an efficient radio manufacturing organization, formed an alliance with the International Radio and Telegraph Company (NESCO's successor). Westinghouse's part ownership gave them control of Fessenden's patents, particularly continuous-wave transmission and heterodyne transmission. Westinghouse also wisely purchased in October of 1920 Armstrong's patents on the regenerative and superheterodyne circuits -- which also included some of Columbia University professor Michael Pupin's patents. This placed Westinghouse in a strong bargaining position vis-à-vis RCA and in their new consolidated corporation. Westinghouse joined the growing group of radio companies on June 30, 1921. With these mergers, RCA agreed to purchase forty percent of its radio apparatus from Westinghouse and sixty percent from GE.
Through these and other legal arrangements, RCA obtained the rights to over 2,000 patents. These amounted to practically all the patents of importance in the radio science of that day. As a result, other firms in the radio industry, for example, the United Fruit Company and the Wireless Specialty Apparatus Company, entered into cross-licensing arrangements with RCA.
RCA also made arrangements internationally with the three dominant companies in radio communication in their respective countries. British Marconi, Compagnie Generale de Telegraphie sans fil, and Telefunken. Each corporation was given exclusive rights to use the other companies' patents within their own territories.
The rise of amateur radio in the 1920s and, to a greater extent, the demand for new products by the general public contributed to the rise of the broadcasting industry. This put a strain on the earlier agreements between the major radio corporations and between 1921 and 1928 there was a struggle over patents for control of the evolving medium.
An initial attempt by AT&T to control the broadcasting industry -- using its earlier cross-licensing agreements to manufacture radio telephone transmitting equipment -- began with AT&T's disposal of RCA stock holdings in 1922-1923. It ended in 1926 with a new cross-licensing agreement which gave AT&T exclusive patent rights in the field of public service telephony and gave GE, RCA, and Westinghouse exclusive patent rights in the areas covered by wireless telegraphy, entertainment broadcasting, and the manufacture of radio sets and receiving tubes for public sale.
In 1926 after the agreements were finalized, RCA, GE, and Westinghouse joined forces and established the National Broadcasting Company (NBC). Fifty percent of the stock went to RCA, thirty percent to GE, and twenty percent to Westinghouse. The new company was divided into three divisions: the Red, Blue, and Pacific Networks. Independent, competing networks soon emerged. William S. Paley and his family formed the Columbia Broadcasting System (CBS) in 1927. The Mutual Broadcasting System was formed in 1934.
By 1928 RCA had strong patent positions in all major areas of the radio industry, including the research, development and manufacture of vacuum tubes and speakers. Most small companies entering the industry in the 1920s produced their products based on prior research by others and on expired patents. An RCA license, therefore, was essential for the manufacture of any modern radio set or vacuum tube.
In the late 1920s new developments in the reproduction of sound, produced significant changes in the phonograph industry. Among those new developments were the introduction of the electronic record, and the marketing of the Radiola 104 Loudspeaker in 1926. In 1929 RCA purchased the Victor Talking Machine Company. This changed not only the quality but the sales of the phonograph and the phonograph record. A new entertainment industry was born and an ever-expanding market for consumer products was created with cultural implications that continue today.
German industrialists were eager to break the Marconi Company's monopoly. Although Marconi had patents on his inventions in Germany, the Germans developed a rival system through the Telefunken Corporation, incorporated in 1903, based on the inventions of Professor Ferdinand Braun, Dr. Rudolf Slaby, and Count George von Arco.
Before 1903 the Braun-Siemens and Halske system had been developed by Gesellschaft fur Drahtlose Telegraphie (GFDT). The Slaby-Arco system had been developed by Allgemeine Electrizitats-Gesellschaft. After litigation over patents, the German court handed down a decision in favor of the GFDT. The Kaiser, with national interests in mind, ordered that the rivalry cease. The two systems were amalgamated under GFDT, and became known as the Telefunken.
The collection was transferred from the Division of Electricity (now the Division of Work and Industry), on June 27, 1983.
George H. Clark died in 1956 and his collection was subsequently given to the Massachusetts Institute of Technology. In 1959 the collection was given to the Smithsonian's new Museum of History and Technology, where space was available to house it. The collection remained in the Division of Electricity until the spring of 1983 when it was transferred to the Archives Center.
George H. Clark assembled this collection over a fifty year period. He purchased books, newspapers, and periodicals, and spent, it seems, all his spare time pasting these onto sheets of paper. Occasionally he received donations, both large and small, from former wireless colleagues. From time to time, he also obtained large bodies of disparate material from other sources. These include business records, laboratory notes, correspondence, reminiscences, and other materials. Clark apparently kept no records of materials he received. See series 1 for additional information on Clark as a collector.
Listed below are some of the major sources of the collection.
Donated by Captain Evans and Captain Guy Hill.
Clark received a large batch of material that John Stone Stone had stored with AT&T in 1912.
Clark obtained some material directly from the company, while some came from RCA.
Farnsworth was a radio industry lawyer (one of his clients was Wireless Specialty Apparatus Company (WSA)) from whom Clark purchased books and legal records, the latter containing a wealth of engineering material.
50 Volumes of material on radio litigation.
Set of US Patents.
Complete files of correspondence.
engineering files.
These personnel files, the Official Personnel Folders (OPF), of federal employees of the Weather Bureau and some other agencies were obtained by Robert S. Harding from the U. S. Office of Personnel Management, Record Appraisal and Disposition Division (NIR), St. Louis, Missouri. General Records Schedule 1 provides that an OPF may be disposed of to a suitable institution if the individual is more than seventy-five years of age, and has been out of the Federal service more than five years.
At the close of the National Electric Signaling Company's (NESCO) receivership, Clark received a large volume of NESCO's files, including photographs, books, and legal records. He also received Fessenden material from Massie, W. S. Fitzpatrick, Jack Duffy, WSA, and Dublier.
First donations of material to be added to the Clark collection by someone other than Clark. When Dr. Goldsmith changed his vocation from teaching to inventing he turned over a large number of early works, including books and pamphlets.
Some very old material not of great bulk was obtained from Mr. Pillsbury, W.S. Fitzpatrick, and Jack Duffy. From Russell Hoffman some records of the Marconi Company were obtained that had been discarded from RCA files. On the dissolution of the firm of Sheffield and Betts, Clark bought some material, from chief clerk John Herr. This consisted mainly of large volumes of litigation, old exhibits, and some early data on Marconi.
Martin was an electrical expert aide for the US Navy and a collector of wireless records with a similar collection to Clark's. Martin gave Clark his entire collection which contained data from all companies, especially many from the earlier periods of wireless, and also data on all U. S. Services.
Clark received a large volume of discarded legal files, from which engineering material was extracted for the collection.
Julius Martin and George Clark collected material documenting early wireless work in the Navy from Navy sources. These records were duplicates of material in the files of the various Yards and at the Bureau of Steam Engineering in Washington, and in great part consisted of material used by these engineers during the progress of their daily work in Navy Service. Many of the records were written by these men, as specifications, instruction books, and so forth. As a story of the early transmitters and receivers of wireless these sheets may be of value particularly when accompanied by their explanations written in later years.
These items consist of Clark's log books and many general issue items, for example, press releases, annual reports, and complete files of RCA house organs issued to employees. This latter material was either issued to Clark as an employee or donated to him by others. Clark also collected some material culled from items which had been discarded from the file rooms and sent out for destruction. For example, Clark mentions at one point that he was attempting to save a complete file of the drawings of the Marconi Wireless Telegraph Company of America, which he hoped would form a complete record of the company's apparatus and installations.
Clark received a "cartload" of records after this company failed. Clark mentions that he was to receive some STTC records from Mr. E. R. Cram. Clark wrote a biography of Stone (Class 4, Box 26, Bound Volumes).
A small amount of data on this and other German concerns was donated to Clark by Mr. Boehme.
After his death Clark received some papers of his former colleague who had been chief engineer of the Marconi Wireless Telegraph Company. These consisted mostly of Weagant's work on static reduction. From these papers and his own Clark wrote a biography of Weagant (Class 4, Book 17, Box 29, Bound Volumes)
The collection was donated to the Smithsonian in 1959.
George H. Clark Radioana Collection, Archives Center, National Museum of American History, Smithsonian Institution
Processed by Robert S. Harding, archivist, 1990; revised by Robert S. Harding, archivist, 2001. Series 4 processed by Cathy Keen, May 2000.
Series 1 contains cataloging information on apparatus in the RCA Museum begun by Clark in 1928, including a general description of objects; information about the classification system Clark devised for his "Radioana" collection, including U.S. Navy WWI Classification system; and information on the history of the collection.
Series 2 consists of a memorandum from Clark to RCA and GE recommending the adoption of the Government's type number system for all American radio companies, and specifically recommending the Navy type numbering system.
Series 3 contains lists, by number, of photographs in the files of Thomas Coke Knight, New York City (see Series A). It also includes lists of other photographs, e.g. RCA and the Marconi Company; Jenkins Television System, manufactured at De Forest factories at Passaic and Jersey City, New Jersey, 1925 - 1928; negative numbers with some captions for the RCA Radio Show Display, "The Wooden Book of Radio" and the duplicate of a bound book in series 14 containing photographs of the display; and a notebook, titled "Fessenden" containing photographic captions and numbers for the National Electric Signaling Company, Brant Rock, Massachusetts.
Series 4 comprises a large collection of disparate materials accumulated by Clark on persons important in the technological development of radio. Included in it are primary materials relating to some of the most important inventors and innovators in radio and wireless communication, including Guglielmo Marconi, Lee DeForest, Nicola Tesla, Reginald A. Fessenden, Roy A. Weagant and John Stone Stone. Additionally, Clark collected documentation on amateurs, radio corporation executives, navy radio aids Clark knew, operators, engineers and hundreds of others active in radio in the first half of the twentieth century. The documents include: letters, and in some cases, full sets of correspondence between individuals; biographical and autobiographical writings (such as resumes) solicited by Clark for inclusion in his "radio library"; writings by Clark and others on various topics in radio history; litigation and patent documents; internal corporate memoranda; drawings, blueprints and designs; and most voluminous, printed material in various forms, including clippings, articles, award programs, press releases and scrapbook entries. Clark's scrapbook entries range from one-line facts about individuals typed or written directly onto a page, citations for other sources of information about individuals, business cards, photographs, and newspaper and magazine clippings ranging in length from one or two lines to several pages.
This series is arranged in alphabetical order by name of individual. The box and folder inventory of this finding aid indicates what types of documents are included on each person. A separate file has been created for individuals when primary material is included. When only secondary material exists, such as clippings, the material has been filed in a general file under the appropriate letter of the alphabet. The finding aid also lists these names and types of documents included. Photocopies of scrapbook items have been filed in cases where information about more than one individual was found on a single page. Correspondence and other documents which pertain to more than one person have been cross referenced in the index to correspondents which follows this finding aid.
A selected list of individuals for whom the collection contains the most comprehensive primary material follows: Armstrong, Edwin Howard; Clark, George H.; DeForest, Lee; Dolbear, Amos; Dubilier, William; Dunlap, Orrin; Fabbri, Alessandro; Farnsworth, Philip; Fessenden, Reginald A.; Firth, John A.; Goldsmith, Alfred N.; Harbord, James G.; Hooper, Stanford C.; Isbell, Arthur A.; Kintner, S.M.; Logwood, Charles Vern; Loomis, Mahlon; Lowenstein, Fritz; Marconi, Guglielmo; Mauborgne, Joseph O.; McCandless, H.W.; Nally, E.J.; Oleson, Harold F.; Pickard, Greenleaf Whittier; Sarnoff, David; Stone, John Stone; Weagant, Roy A.
Article
Biographical information
Award program, article
Article
Article
Scrapbook entry on
Articles
Article
Article
Articles
Scrapbook entries on
Article
Article
Article
Scrapbook entry on
Article
Article
Article
Writings about
Articles
Letter, 1922
Biographical writings, article
Correspondence, 1922; biographical writings; article
Correspondence, 1919
Correspondence, 1935-1945; biographical information; articles and printed material
Correspondence, 1935; biographical writings; article
Correspondence, 1937-1945; biographical information; article
Writings
Correspondence, 1941
Correspondence, 1916-1941; biographical writings; patent documents; scrapbook entries and clippings on; litigation documents
Biographical information; articles
Letter to, 1935; biographical information; scrapbook entries on; articles
Letter, 1910; scrapbook entries on; articles
Scrapbook entry on
Article
Article
Article
Article
Scrapbook entry on
Article
Article
Articles, scrapbook entries on
Scrapbook entry on
Article
Article
Article
Scrapbook entry on
Article
Article
Article
Award program, article
Article
Article
Article
Award program, articles
Scrapbook, entries on
Resume
Article
Scrapbook entry on
Award program
Article
Scrapbook entry on
Article
Scrapbook entry on, article
Article
Article
Article
Scrapbook entry on
Scrapbook entry on, article
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Articles
Scrapbook entry on
Press release
Articles
Scrapbook entry on
Article
Scrapbook entry on
Article
Scrapbook entry on
Scrapbook entries on
Scrapbook entry on, article
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on, arcticle
Scrapbook entry on
Scrapbook entry on
Memorandum
Scrapbook entry on
Award program
Article
Scrapbook entry on
Memorandum, scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Biographical information
Biographical writings, articles, scrapbook entry on
Autobiographical writings
Press release, scrapbook entry on
Correspondence pertaining to, 1938
Letters, unknown date
Correspondence, 11903-1909
Correspondence, 1910
Correspondence, January - July, 1911
Correspondence, August - December, 1911
Correspondence, 1912
Correspondence, 1914-1917
Correspondence, 1918-1927
Correspondence, 1928-1934
Correspondence, 1935
Correspondence, 1936
Corrspondence, 1937-1939
Correspondence, 1940-1941
Correspondence, 1942-1943
Correspondence, 1944-1945
Correspondence, 1946-1948
Letters relating to, 1934-1935
Biographical information
Biographical writings about
Autobiographical writings by
Autobiographical writings by
Writings on his career
Writings and speeches
Writings on radio history
Writings on his collection and library
Writings: "'Regeneration' in the U.S. Navy"
Writings: "Preliminary Data on possible transfer of my historical library and collection of radioana to the Radio Corporation of America", June 11, 1941
Clark's list of patentable inventions, 1919
Litigation documents
Financial documents
First salary check
Clippings and printed material
Printed material
Miscellany
Records (drawings, notes) of Clark's patentable inventios, undated
Records (drawings, notes) of Clark's patentable inventions, 1905-1907
Records (drawings, notes) of Clark's patentable inventions, 1908-1913
Records (drawings, notes) of Clark's patentable inventions, 1914-1915
Records (drawings, notes) of Clark's patentable inventions, January - May, 1916
Records (drawings, notes) of Clark's patentable inventions, June, 1916 - 1917
Records (drawings, notes) of Clark's patentable inventions, 1918-1919
Records (drawings, notes) of Clark's patentable inventions, 1920
Letters, 1944
Litigation documents
Biographical information
Letters, 1933-1935; business card
Letter, 1931; certificate, 1911
Press release, articles, scrapbook entries on, address by David Sarnoff on
Biographical information
Biographical and autobiographical information
Biographical information, articles
Letter pertaining to, 1936
Correspondence of and about, 1908-1947; biographical information; writings; drawings; scrapbook entries on
Biographical information, printed matter
Letters, 1930
Letters, 1922-1935; information on inventions; scrapbook entry on
Writings
Scrapbook entry on
Scrapbook entry on
Article
Business card
Scrapbook entry on
Press release
Scrapbook entry on
Article
Biographical information
Scrapbook entry on
Scrapbook entry on, article
Scrapbook entries on
Article
Article
Scrapbook entry on
Article
Memorandum
Award program
Award program
Biographical information
Scrapbook entry on
Biographical information, article, scrapbook entries on
Article
Article
Article
Biographical information, article
Scrapbook entry on
Scrapbook entry on
Letter, 1935
Correspondence of and relating to, 1919-1920
Letters, 1932-1939; biographical information; articles
Correspondence with Clark, undated and 1917-1948
Correspondence, undated and 1918-1947 (some of it in excerpt form)
Letters pertaining to, 1939-1947
Poem about
Scrapbook entries on
Clippings and articles
Miscellaneous printed material
Articles about
Autobiographical writings
Writings, "Wireless Telegraphy as it is Today"
Articles by, 1898-1903
Miscellaneous writings
Litigation documents
Biographical writings
DeForest Company documents
Miscellany
Litigation documents
Speech
Letter, 1937
Letters to and pertaining to, 1900-1941
Writings: "On my Researches in Telephony"
Biographical writings and articles
Letters of and pertaining to, 1911-1947
Letter, 1931-1948
Biographical writings, articles
Correspondence pertaining to, 1919-1920
Litigation documents, 1920
Book, Practical Guide to Long Distance Wireless Telephony, 1902; article
Letter, 1944; biographical writings; articles; scrapbook entries
Biographical information; articles
Review of his radio manual
Biographical information, articles
Scrapbook entries
Notes by Clark on, scrapbook entry on
Article
Article
Articles
Article
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Award program
Scrapbook entry on
Scrapbook entry on
Article
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Scrapbook entry on
Article
Biographical writings, scrapbook entries
Biographical article, 1941; scrapbook entry on
Letters relating to, 1929-1931; plans for ceremony honoring
Articles about, biographical writings
Letter, 1930
Letters, 1941-1947; writings about; biographical information; scrapbook entries on; articles
Biography, article
Biographical writings; letters, 1943-1947; article
Correspondence
[Radiogram from S.S. Trimountain to Yokohama, Japan].
[Radiogram from S.S. Trimountain to Yokohama, Japan].
AC0055-0000001-1.tif (AC Scan)
AC0055-0000001-2.tif (AC Scan)
Reverse side shows radiogram terms.
M.W.T Co. Research Reports: Vacuum Tubes Report #7
[Charlie McCarthy, Edgar Bergen and David Sarnoff at Sarnoff's New York office, black-and-white photoprint.]
AC0055-0000038.tif (AC Scan)
87-9237 (SI neg number)
Silver gelatin on paper.
Black copy print notebook 2.
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Consists of correspondence to and from Fessenden and other NESCO employees with GE, patent attorneys, the U. S. Navy and other correspondents. Also, contracts, laboratory reports and other company records.
"History of Specific (Radio) Companies" Scrapbook, pp. 1-171
[Marconi plant, black-and-white photoprint.]
AC0055-0000033.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Oversize box
Consists of correspondence to and from Fessenden and other NESCO employees with GE, patent attorneys, the U. S. Navy and other correspondents. Also, contracts, laboratory reports and other company records.
Correspondence, 1911-1920 between the below listed individuals in the Pittsburg, Pa. and Brooklyn, N. Y. offices regarding the Arlington Salem Test and the publication of an article about it. The test was made primarily to allow the contractor, NESCO, to demonstrate, under service conditions, the effectiveness of the apparatus it had supplied to the Navy Department. The correspondence also concerns the establishment and maintenance of the Arlington Station; patent litigation; abstract of cases in Fessenden NESCO litigation; and business concerns of the International Radio Telegraph Company.
Clay, F. W. H., NESCO patent attorney
Forbes, E. D., NESCO chief engineer
Herr, E. M., President, Westinghouse Electric & Manufacturing Hogan, John V. L., NESCO Chief O. I. E Kintner, Samuel M., NESCO General Manager and Receiver Krogen, F. H. Lee, J.W. Walker, Hay, NESCO president Wallis, A. F. Woodworth, E.B., Navy Dept., Bureau of Steam Engineering
U. S. Naval Radio Station, Arlington, Va.
Series 6 contains biographies of individuals associated with shore stations, including Lieutenant A. Fabbri, U.S.N.R.F.; blueprints; Brant Rock Notes (2 volumes); correspondence; descriptions and photographs of early wireless stations; diaries; data; drawings; engineer's logs; histories; invoices; maps; news clippings; notes; photographs, including some of RCA Radio Pageant, 1929; postcards; public news reports; receipts; signal reports; specifications; telegram forms from commercial and government shore stations for trans oceanic communication and for communication between shore stations. The shore stations include Astoria, Colon, Ketchikan, and Tuckerton. A list of shore stations can be found in series 109.
This series does not include stations for marine or aircraft communications, either on shore or afloat, or broadcasting, television, and amateur stations. See Series L for index to photographs in Bound Volumes.
Shore Stations Radioana Book 1
[Antenna tower, Chatham, Massachusetts, black-and-white photoprint.]
AC0055-0000053.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Condenser bank in the Marconi Wireless Telegraph Company of America H.P. Station in Marion, Massachusetts, black-and-white photoprint.]
AC0055-0000114.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Shore Stations Radioana Book 2, (photographs)
Radio reception table, Belmar, [New Jersey], Radio Corporation of America, Engineering Department, [black-and-white photoprint.]
AC0055-0000093.tif (AC Scan)
2002-5203 (SI neg number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Landline switchboard, Belmar, [New Jersey], Radio Corporation of America, Engineering Department, [black-and-white photoprint.]
AC0055-0000094.tif (AC Scan)
2002-5202 (SI neg number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Landline table, Belmar, [New Jersey], Radio Corporation of America, Engineering Department, [black-and-white photoprint.]
AC0055-0000095.tif (AC Scan)
2002-5195 (SI neg number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Traffic room, Belmar, [New Jersey], Radio Corporation of America, Engineering Department, [black-and-white photoprint.]
AC0055-0000096.tif (AC Scan)
2002-5201 (SI neg number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Radio receiver shelves, Belmar, [New Jersey], Radio Corporation of America, Engineering Department, [black-and-white photoprint.]
AC0055-0000097.tif (AC Scan)
2002-5200 (SI neg number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Small storage battery room, Belmar, [New Jersey], Radio Corporation of America, Engineering Department, [black-and-white photoprint.]
AC0055-0000098.tif (AC Scan)
2002-5199 (SI neg number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Receiving sets on shelves, Belmar, [New Jersey], Radio Corporation of America, Engineering Department, [black-and-white photoprint.]
AC0055-0000099.tif (AC Scan)
2002-5198 (SI neg number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Duplex relay shelf, Belmar, [New Jersey], Radio Corporation of America, Engineering Department, [black-and-white photoprint.]
AC0055-0000100.tif (AC Scan)
2002-5197 (SI neg number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Battery charging panel, Belmar, [New Jersey], Radio Corporation of America, Engineering Department, [black-and-white photoprint.]
AC0055-0000101.tif (AC Scan)
2002-5196 (SI neg number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Shore Stations Radioana Book 3
[Control room of Marconi Wireless Telegraph Company of American station, Chatham, Massachusetts, black-and-white photoprint.]
AC0055-0000055.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Shows cluttered desks with typewritters.
[Office of receiving station of Marconi Wireless Telegraph Company of American station, Chatham, Massachusetts, black-and-white photoprint.]
AC0055-0000056.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Shows man working at a typewritter.
[Operating building of Marconi Wireless Telegraph Company of American station, Chatham, Massachusetts, black-and-white photoprint.]
AC0055-0000057.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[400 foot steel antenna mast for the Marconi Wireless Telegraph Company of American station, Chatham, Massachusetts, black-and-white photoprint.]
AC0055-0000058.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Series 7 contains a catalog of "Marine Coastal stations of RCA and Typical Marine Equipment"; correspondence 1911-1924, 1931, 1935; diagrams; drawings; inventories; list of stations ashore by company, May, 1915; news clippings; news releases; photographs, including RCA Radio Pageant, 1929; radiograms; RCA Radio Telegraph Transmitter catalogs; and ships position reports of commercial and government marine radio stations both ashore and afloat. The offshore stations include the S.S. Arkansas, S.S. Atlanta, U.S.S. Connecticut, S.S. Leviathan, S.S. Mauratania, and U.S.S. Philadelphia.
This class does not include aircraft communication stations. A list of stations is in Series 109.
Series 8 contains articles; booklets; catalogs; correspondence; descriptions of stations and equipment; extracts; histories; newspaper and magazine clippings; notes; pamphlets; photographs; postcards; releases; RCA Radio Pageant, 1929; statistics; and summaries of data about specific broadcast stations, AM and FM, and about broadcasting studios. This series includes information about government and commercial stations, lists of which are in Series 109.
Broadcasting Stations
Series 9 contains articles from Radio News, Radio Condenser, and QST, a magazine devoted exclusively to the wireless amateur; a book, Practical Wireless Amateur Stations; news clippings; photographic illustrations of amateur stations and "set-ups"; and a radiogram to Clark, 1933. Lists of stations are in Series 109.
Miscellaneous materials which Clark did not place in other classifications ( or Series) he included in this Series including advertisements: including one for an RCA Victor tie clasp; articles; building plans; panel from a Marconi cigar box; correspondence; essays on wireless; examination by Clark, 1939; "Postage Stamp Containing Direct or Indirect Reference to Radio Communication"; maps (Works Progress Administration Employment, October, 1936); news clippings; news releases; photographs; reports. The series also holds seven booklets, including the "Official Handbook of [the] Panama Canal", 1913, and a photographically illustrated booklet about the Panama Canal, compliments of the United Fruit Company and Steamship Service, with views of the Canal under construction and a map of the Canal Zone.
Series 11 includes Wireless Age, 1920 -1924, Volumes 8 & 11; Shuart, G. W., Radio Amateur Course, 1938; and Grainger, J., Amateur Radio, 1922.
Series 13 contains specifications of the United States Navy, Army, and commercial companies for all types of radio apparatus, including condenser racks; continuous wave radio transmitting equipment; loop radio receivers; Marconi vacuum tubes; Moorehead tubes; radio communication apparatus; D.C. and A.C. volt meters, D.C. and A.C. ammeters, Wattmeters, Ampere Hour meters, radio frequency ammeters; radio direction finders; switchboard instruments and appliances; transmitting condensers; and transmitting vacuum tubes. Also included are drawings, index sheets of series of blueprints, and memoranda regarding specifications.
Series 14 contains material on the history of the radio in general, consisting of abstracts of manuscripts, reports, and printed works; addresses; articles; autobiographies; booklets; correspondence; clippings from journals; diagrams; histories; lectures; memoranda; notes; pamphlets; photographs; releases; reports; reviews; sketches for notes; statements; talks; and portions of yearbooks.
Series 15 contains catalogues and other advertisements from many companies for a variety of related products e.g. batteries, tubes, and ear phones. Advertisements for broadcast receivers are in Series 45.
Series 16, contains log books compiled by early wireless workers between 1907 and 1919. Also included is an unused bound amateur log book. The authors of the books are not identified in most cases. The logs record various tests and experiments with radio equipment.
Series 17 contains some correspondence, 1935-37 and 1941, to and from Clark and other executives regarding company house organs; a report on the possible issue of an RCA house organ; and copies of various house organs, including the following:
Allerton House Magazine, 1929
Amrad (The Voice of the Air), 1922-1923
De Forest Ourselves, 1929
Federal Flashes, 1920
General Electric News, 1939
Over the Soldering Iron, 1934
(RCA) Photophonews, 1932, 1931
RCA Key-Clicks, 1938
Sales and Service, 1938 (RCA Photophone Ltd.)
Telegraph and Telephone Age, 1936
The Aerovox (research Worker), 1928
The Andion (DeForest), 1929
The Grid (DeForest Radio Co.), 1929
The Marconi Review, 1936
The RMA News, 1928, 1929
The Radiotron News (RCA), 1929, 1930
The Voice of the Victor, 1930, 1911
Wireless News, 1903
This class does not include yearbooks or proceedings of radio societies. See Series 145.
Series 18 consists of photographs of Prime Movers and instructions for the care and preparation of motor boat gas engines. Included are several photographs of Curtis Turbine sets; photographs of alternating current generators for wireless telegraphy; internal combustion and steam engines and air driven generators; specifications for Hornsby Akroyd oil engine, 1904; blueprints of several engine diagrams; directions for engine operations; and descriptions of wireless telegraphy powered by steam turbines.
Series 19 contains data and photographs regarding both storage and dry type batteries; notes; memoranda; correspondence; magazine and newspaper clippings; bulletins of RCA Institutes, Inc., School of Communication; blueprints and drawings; abstracts from Naval Radio Monthly Report; Bulletins of the Edison Storage Battery Co.; instructions for changing and operating batteries; and notes on acceptance, inspection, installation, charging and discharging, maintenance, and trouble with batteries.
Series 20 contains newspaper and magazine clippings, articles, correspondence, pamphlets and booklets, about rectifiers; several copies of "Descriptive Specifications for Rectox Rectifiers," instructions for installation and operation; and Department of Commerce and Labor, Bureau of Standards, publication titled "Some Contact Rectifiers of Electric Currents."
The series includes Mercury type, Mechanical Thermionic-electric, and Dry, contact type, but does not include tubes for electronic types.
Series 21 contains information on motor generators and hand generators, including newspaper clippings on gasoline generators; diagrams and graphs; standard descriptive data and tests for motor-generator sets; correspondence; reports and directions on use of lead covered conductors; specifications of high tension direct current generator sets; specifications of steam turbines and alternators; and photographs.
Series 22 consists of nameplates of apparatus assigned by RCA; badges of radio companies; badges of radio inspectors, and radio aides; pins, rings, and other insignia of radio societies and radio companies; included are drawings, diagrams, nameplate instructions, correspondence and memoranda of RCA officials, 1928 regarding nameplates on apparatus manufactured by RCA, diagrams of nameplates, and an explanation of RCA model designations.
Series 23 contains advertisements; articles; correspondence, 1911-1933, including a letter to Philo Farnsworth with a file history on Andrew Plecher's patent no. 187,664; diagrams; minutes; photographs of radio switchboards and instruments; reports, including a printed report by G.E. on field rheostats, 1914; and specifications for: Panel and frame; Switches; Voltmeters and other meters; Frequency meters (power frequency); relays (except relay keys); Solenoid switches (as part of the panel); Field rheostats (as part of the panel); Motor generator transfer switch (when not an integral part of the motor starter); Transformer transfer switch; and fuses, clips, and terminals.
Series 24 contains information about radio frequency switches; Fessenden send-receive switch "walking beam" type; American Marconi antenna transfer switch; and Stone Telephone and Telegraph Co. antenna send-receive switch. Also included are records and drawings of antenna transfer switches produced by the De Forest Co., the Wireless Specialty Apparatus Co., and the Liberty Electric Corporation. There is also correspondence to and from George H. Clark regarding this technology.
Series 25 contains abstracts; advertisements; articles; clippings; correspondence (1910); descriptions of transformers; diagrams; photographs; reports; sketches; and specifications for transmitter transformers, particularly for spark transmitters. This material covers high and low tension reactances and built-in transformer choke coils (when external these are listed as "protective devices").
Series 26 consists of photographs; blueprints; reports; general data; drawings; descriptions; main sending key; relay keys, such as the Massie relay key; combined hand and relay key; relay control key; resistances, reactances, aluminum cells, etc. to reduce sparking at key contacts; and sample of tape perforated by Kleinschmidt perforator for use with the high speed automatic transmitter.
Series 27 contains advertisements; articles; correspondence, 1909 and 1941; descriptions; and illustrations concerning power type interrupters, particularly Chopper (for arc transmitters) Mechanical, Mercury Turbine, and Wehnelt.
Series 28 contains advertisements; articles; blueprints; booklets; correspondence, 1915-1917; diagrams; and reports, such as the "History of Protective Devices," 1919.
This series contains message blanks for radio communication including aerograms; Marconigrams; Photo Radio Receiving blanks; postal cards; radiograms; and wireless press sheets. The following companies or agencies are represented: American De Forest Wireless Telegraph Company; Amalgamated Wireless (Australasia) Ltd.; Companhia Radio Telegraphica Brasileira; Continental Wireless Telephone and Telegraph; Chinese Government Radio Administration; Fessenden Wireless Service, NESCO; French Radio Co; Globe Wireless Ltd; Great Northern Telegraph Co. (Hong Kong); Holland Radio; Imperial Japanese Telegraph; Israelite House of David Wireless Station (Michigan); Japanese Sending Blank; Makay Radio; Marconi Wireless Telegraph Company of America; Massie Wireless Telegraph; Occidental & Oriental Wireless Company; Pacific Wireless Telegraph Company; RCA; Servigo Radio Telegraphico; Societe Anonyme Internationale De Telegraphie Sans Fil (Bruxelles); Stone Telephone & Telegraph Co., 1921; Tropical Radio Telegraph Company; United Wireless Telegraph Company; United Fruit Company; U.S. Naval Radio Service, 1915; and U.S. Signal Corps.
Series 31 documents the history and manufacture of the transmitter condenser, including the extensive patent litigation which shaped its development. Included are blueprints; correspondence, 1910-1922; depositions; drawings; index of patents and publications; lists of patents and cross references to patents; outline of chronological history of transmitter condensers; patents (copies); photographs; reports; telegrams; tests; trial testimony and transcriptions. See Series L for index to photographs in Bound Volumes.
Series 32 contains material on various spark gaps, among which are rotary type, synchronous and non-synchronous; fixed gap, non-quenching; quenched gaps; gaskets; anchor gaps in antenna circuit; synchronous rotary spark gaps; compressed air gaps, etc. Included are diagrams; photographs; descriptions; explanatory notes; data; magazine and newspaper clippings; pamphlets; abstracts of contracts and payments; testimony; reports; correspondence; and court proceedings related to spark gaps.
Series 33 contains information relating to oscillation transformers; couplers; variometers; and primary and secondary coils of transmitters. Included are magazine and newspaper clippings; notes; correspondence; graphs; diagrams; drawings; illustrations; brief histories; descriptions; abstracts of testimony; and abstracts of court claims regarding transmitter inductances.
Series 34 contains information regarding wave changers in the U.S. Navy; instruction for installation and operation of Navy-type wave changer systems; notes on transmitters regarding Lodge patent; and descriptions, drawings, photographs, and diagrams regarding waves of the first submarine set for the U.S. Navy, of Priess-Bath magnetic control wave changers, and of wave changers used with 1 K.W. type "C" transmitters. Also included are testimonies, contracts, requisition, correspondence, memoranda, and abstracts of orders.
Series 37 contains information regarding arc transmitters, including illustrations and photographs of machines and of wireless telephone operators; brief descriptions; histories; notes; articles; diagrams; newspaper and magazine clippings; correspondence; memoranda; reports; data regarding Federal arc sales to U.S. Government, on arc contracts, etc; specifications; contracts and requisitions for arc transmitters; and resume of data on arc contracts. See Series L for index to photographs in Bound Volumes.
Series 38 consists of literature, data, and photos pertaining to different types and models of vacuum-tube type radio transmitters. It includes lists of vacuum-tube transmitters made by different companies; price lists; notes on the first use of tube transmitters by RCA and on arrangement of oscillation in Mercury Vapor Tubes. Instructions for the operation of various models of radio telephone sets and telephone transmitters; memoranda; correspondence; descriptive specifications; photos of machines and of people operating machines; diagrams; reports; newspaper and magazine clippings; data regarding radio transmitters; articles; drawings; general descriptions; extracts of contracts and payments for vacuum-tube transmitters; specifications; and copies of bulletins, pamphlets, and booklets. See Series L for index to photographs in Bound Volumes.
Series 39 consists of advertisements; correspondence (Fessenden, l900-09; NESCO, l909-l7; Clark, l937-40); data files on Alexanderson's Alternator and Goldschmidt's relection-type radio-frequency alternator; descriptive specification for Standard Signal generator type TMVl8; schematic diagrams; and photographs. See Series L for index to photographs in Bound Volumes.
Series 41 contains advertisements; booklets; correspondence, l9l9-l940; schematic diagrams; engineer's reports and tests; grids; magazine articles; newspaper clippings; photographs; price lists; sales bulletins; sales catalogues; specification reports; technical data reports; technical information sheets; and tube test reports of transmitting type vacuum tubes. RCA and the De Forest Company are represented.
Series 43 consists of advertisements; correspondence, l9l4, l9l6, and l920; charts; graphs, diagrams; news clippings; notes, handwritten and typed; periodical clippings; photographs; schematic blueprints; and schematic wiring diagrams of a complete receiving system. Also included are materials on a transoceanic receiving system; centralized radio installation; auditorium systems; receiver with separate heterodyne driver; and hotel distribution systems. It does not include materials on static reducing systems.
Series 45 includes RCA Radiola radio receivers catalogues; technical discussion booklets; technical information and service data sheets; instruction manuals; and service notes filed by model number. RCA and associated manufacturers' battery-type Radiola advertisements, booklets, catalogue material, news clippings, illustrations, photographs, and price lists. There are also replacement parts catalogues filed by name of Radiola. Other catalogues include those of General Electric, Graybar, and Westinghouse. There are also miscellaneous articles; booklets; brochures; catalogues; correspondence; installation and operating instructions booklets; newspaper and periodical clippings and articles; illustrations; instruction books; news releases; photographs; sales literature; and specifications of broadcast receivers of various companies.
RCA Victor
[Aeriola Jr. radio receiver, advertisement]
AC0055-0000003.tif (AC Scan)
In box 426, folder 2.
Radio made by Westinghouse.
Series 47 contains articles; blueprints; bulletins; charts; correspondence; diagrams; graphs; illustrations; news clippings; periodical clippings; photographs; Radio Data Book, l907; sales literature; sketch books; and technical bulletins of low tension inductances for receivers and in test work. It includes air core inductances for receivers (standard inductances in laboratory work); air core inductances for wave meters; couplers and goniometers.
Series 48 contains literature about receiving condensers, including variable and fixed types, detectors, and test appliances; standard condensers for laboratory use; protective device condensers; and key condensers. Included are mostly patents and variable patents, but also there are indexes, diagrams and drawings. This series also consists of patents on sub-class 2 and including specification of Letter Patents on foiled paper and methods of producing same; on condensers; on electrical ignition devices; on press-plates; on press-mold; on condenser terminals and methods of framing same; on protective units, on high-frequency electrical oscillation apparatus. In addition, there are bulletins; magazine clippings; booklets; correspondence; drawings; diagrams; graphs; reports; extracts from U.S. Navy monthly reports; pamphlets; articles; memoranda; test; and experiments.
Series 49 contains advertisements; articles; a bid invoice; blueprints; booklets; bulletins, specifications; correspondence, l905-l920 & l942; diagrams; instruction booklets; illustrations; news clippings; notes; patent copies; periodical clippings; photographs; service notes; a General Electric Radio Apparatus Catalog for audio-signal-indicating devices; C. Brandes, Inc. Radio advertising. Audio signal devices include: head telephones; telephone cords; telephone headband; telephone transformer; audibility meter; shunt box; group tuners where used in receiver circuit, and telephone condensers. (Box #221 is oversize).
Brandes Headset advertising material: posters, brochures (oversize)
Slaby Arco receiver, interior / U S Navy [sic] / 1903 [cyanotype].
AC0055-0000031.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Made for the U.S. Navy. No. 1136 in image area, SRM 46 110 in ink in bottom margin. Receiver made in Berlin.
Valve tuner. With Fleming valves / Marconi W T Co. of America / About 1912 [typed on mount] [lack and white photoprint]
AC0055-0000032.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Tuner made by the Marconi Wireless Telegraph Company of America. In ink at bottom of mount: SRM 46 208. "Photo to / G H Clark / from Geo. / Hayes" in ink on mount.
Series 50 consists of material relating to detectors, especially where constructed as self-contained units. Included are coherers, tone wheels, tickers, magnetic detectors, vacuum tube detectors with control, complete; cat-whisker detectors; crystal detectors; electrolytic detectors; group tuners for use in the audio circuit, tone testers, detector-tester, "ticker" for testing detectors, etc. The materials contains patents, testimonies for G. W. Pickard in Pickard vs. Austin, and general data on detectors including histories; designs, specific and general; methods of manufacture, uses; tests; drawings; photographs; specifications; contracts; patents; litigation records; testimonies; inventors; names and addresses of companies manufacturing detectors; reports; articles; newspaper and magazine clippings; correspondence; notes; blueprints; charts; court proceeding; pamphlets; booklets; experiments; portions of journals; and petitions. This series does not include amplifiers, or individual vacuum tubes. See Series L for index to photographs in Bound Volumes.
Series 51 consists of material about amplifiers, wave changers and tuners, particularly the enhancement of reception and ease of operations of such equipment, with military and civil applications. Included are instruction manuals; bulletins; operations reports; test results; blueprints; diagrams; original sketches; graphs; photographs; and copies of papers presented. There is also an informal corporate history by Dr. De Forest; and an incomplete transcript of an appeal from Exchecquer Court of Canada (Foda-Radio Ltd., defendant) and the Canadian General Electric Company. See Series L for index to photographs in Bound Volumes.
Series 52 consists of studies on vacuum tubes, including detector type tubes; amplifier type tubes; rectifying type tubes for receiver; grid leaks; filter system for tube circuit; sockets for tubes; adapters. It contains patents on vacuum tubes; and photographs of receiving tubes; histories; notes; list of books on vacuum tubes; types of vacuum tubes; general specifications; diagrams; drawings; sketches; extracts from newspaper articles; extracts from the U.S. Navy monthly reports; memoranda; characteristic charts; special announcements; descriptive summaries of major equipment; and reports. Also enclosed are a good number of photographs; copies of bulletins and magazines; telegraphic messages; price lists; reprints from journals and books; catalogues; data sheets; technical bulletins; correspondence; affidavits; pamphlets; charts; testimonies; and directions. See Series L for index to photographs in Bound Volumes.
Series 53 contains information on the history of television receivers, including: descriptions; notes; articles; a large number of illustrations of television sets. c. 1948; drawings; diagrams; instructions; photographs of television and engineers; advertisements; news clippings; construction manuals; price lists; instructions; bulletins; pamphlets; and a directory of television receiver manufacturers, 1948.
TV Receivers
Series 54 contains material on photo-radio apparatus including: photographs of people and apparatus; photographs of facsimile receivers; engineers with radio facsimile receiver-printers; operators preparing to send messages; RCA Facsimile Scanners; Jenkins Radio Weather-Map Transmitters; Jenkins Radio Weather-Map Receivers; and several photographs of Jenkins Photoradio apparatus. Also photographs of Jenkins moving picture devices; transmitting facsimile apparatus of the De Forest Company, 1932; radio transmitters made for Radio News Corporation by De Forest Radio Corporation; RCA bulletins on Radio Facsimile system; a booklet on French Facsimile System; list of Experimental Facsimile Broadcasters; a forty-four page bookl on Synchronized Reproduction of Sound and Scene, 1928; some random tests with a photo-radio transmitter and receiver; a number of newspaper and magazine clippings containing articles and illustrations; affidavits transmitted by photoradio; and some notes on facsimile transmission by the RCA Facsimile Service. See Series L for index to photographs in Bound Volumes. See also series 133.
Series 59 contains radio school and college catalogues; bulletins; prospectus; yearbooks; annual reports; correspondence; minutes of meetings; brief histories; and data regarding government examinations for radio operator and amateur licenses. Radio schools include: the Capitol Radio Engineering Institute, Washington, D.C.; Massachusetts Radio School, Boston; Southern Wireless Institute, Baltimore; RCA Institute, Inc., New York; Radio Institute of America, New York; Philadelphia Wireless School; National Radio Institute, Washington, D.C.
Series 60 contains material on loudspeakers including: short histories; instructions for use, installation and maintenance; articles; notes; reports; drawings; photographs and illustrations of loudspeakers and loudspeaker assembly plants; postcards; portions of magazines; booklets; catalogues; advertisements; service notes; and replacement parts list.
Loudspeakers
Series 61 consists of data on insulators and insulating materials. Brief histories; magazines; bulletins; catalogues; pamphlets; abstracts from the Navy Semi-monthly Reports; reports; photographs; correspondence; a list of important patents covering the materials and methods of manufacture of insulating materials; copies of patents; diagrams; and two books: The Insulator Book by the Locke Insulator Manufacturing Company, New York, 1919; and The Story of Bakelite by John Kimberly Mumford, New York, 1924.
Series 62 consists of material on wires including: conductors, conduits and connectors. It includes Litzendraht; special-shaped wire, as square cross-section; and standard resistance units for D.C., A.C., and R.F., but does not include wire used in detectors, as cat-whisker. The series also contains wire samples; specimens of standard colors for receiving leads; clippings; articles; price lists; diagrams; engineering data; correspondence; and booklets.
Series 63 documents various types of microphones and TV accessories; the uses of the microphone by military authorities, political leaders, company executives, and broadcasters; and microphone housings in various countries. It includes brief histories; articles; notes; illustrations; photographs; drawings; correspondence; newspaper and magazine clippings; and bulletins.
Series 64 consists of biographies of broadcasting, television and phonograph artists. It includes notes; newspaper and magazine clippings; interviews; illustrations; pamphlets; correspondence; a cookbook of radio personalities; portions of yearbooks; portions of the Readers Digest; bulletins; a copy of the 1930 edition of Who is Who in Radio . See also Series 4.
Series 66 includes data and photographs on antennas; towers and masts; ground systems; multiple antenna systems; counterpoises; measurements of antenna constants; and measurements of ground resistance. There is a good bibliography on coil aerials and other directional aerials; lists of publications relating to loop antennas; copies of loop patents; portions of bulletins, books, magazines and newspapers; blueprints; pamphlets; reprints from journals; reports; testimonies; photographs; papers; memoranda; instructions; service notes; results of experiments; notes; specifications; diagrams; and correspondence. This series does not include wire for antennas or insulators. See Series L for index to photographs in Bound Volumes.
Series 67 contains advertisements; articles; a cartoon; clippings; correspondence, 1904, 1910, 1930, 1932; diagrams; illustrations; press releases; and a sales catalogue concerning the radio control of battleships and of torpedoes from aircraft. Of particular note is the Hammond Receiver.
Series 69 contains abstracts; articles; blueprints; booklets; correspondence, 1916-1928; descriptions; diagrams; illustrations; instruction sheets; maps; newsclippings; operating instructions; photographs; reports; sales catalogues; sketches; studies; elementary and technical notes; and wiring diagrams of direction finding equipment. Among the types covered are the pilot cable; radio compass; radio range; Loran; Shoran; Dellini Tosi system; and transmitting types of direction finders, such as Becon. See Series L for index to photographs in Bound Volumes.
Series 71 contains abstracts; articles; blueprints; aircraft circuit diagrams; booklets; specification catalogues and manuals; company memoranda; correspondence, 1917; histories; illustrations; newsclippings; periodical clippings; photographs; reports; sketches; technical drawings; technical information and service data for aircraft radio transmitting equipment. Includes combined transmitters and receivers.
Series 72 contains Navy and Army pack sets; combined transmitters and receivers; car sets, etc. It consists of brief histories of portable field sets; descriptions of portable sets; notes; diagrams; drawings; testimonies; notes on experiments; specifications; correspondence, 1911-1916; abstracts of contracts and payments for portable radio sets; The series also contains bulletins; pamphlets; booklets; newspaper and magazine clippings; photographs; data on U.S. Army Signal Corps Battalion-Regiment Set boxes; abstracts from U.S. Navy Monthly Radio Reports; and abstracts from instruction books. See Series L for index to photographs in Bound Volumes.
Series 73 contains advertisements for radios and accessories; articles; booklets; correspondence, 1914-1944; news clippings; periodical clippings; photographs; and sales literature concerning mobile radio systems (transmitters and receivers), for automobiles, trucks, trains, and airplanes. This material details connections via dispatcher and AT&T exchanges. This material does not include information on military packs or portable sets, walkie talkie mobile television and broadcasting sets.
Series 74 contains information about high-frequency, indicating and measuring instruments. It includes data and photos on hot-wire and hot-band ammeters (radiation meters); wave meters and decremeters; thermal couples; stroboscopes; and oscillographs. News clippings from books, newspapers, and magazines; descriptions; instructions; notes; Special Radio Reports; illustrations of apparatus; bulletins and portions of bulletins; pamphlets; catalogues; lectures; patents; blueprints; diagrams; graphs; and drawings. Transmitter adjustments and methods of tuning by wave meter are covered by Series 117, Technical Tables.
Series 75 contains advertisements; articles; blueprints of apparatus; booklets; charts; coordination paper; correspondence, 19ll-1935; Experiment Reports; graphs; instruction books; news clippings; operating instructions; parts lists; periodical clippings; photographs; reports; sales literature; scientific papers of the Bureau of Standards; service notes; standards; technical information booklets; and tuner tests for all individual apparatus not listed under separate classifications.
Series 76 contains advertisements; bulletins; data; illustrations; instructions; instruction books; news clippings; periodical clippings; service notes; sketches; technical information booklets; and training manuals of aircraft receivers not part of a combined transmitter and receiver for aircraft use. Also includes special detectors for airplane use; special amplifiers for airplane use; shock proof housing or holders for detector, amplifier, and receiver.
Series 77 contains blueprints; correspondence, 1909-1922; graphs; instructions; news clippings; photographs; schematic diagrams; sketches; specifications; and tests of military type field portable receivers which are not a specific part of a combined transmitter and receiver.
Series 78 contains abstracts of contracts; blueprints; correspondence, 1909-192l; diagrams; drawings; illustrations; instructions; instruction books; operating and installation instructions; parts lists; periodical clippings; photographs; reports; specifications; technical information booklets; and tests for spark transmitters. Individual parts of a spark transmitter are bolted to a separate housing or frame to form a complete unit which also may include sets.
Series 79 contains information relevant to complete spark transmitter systems, consisting of transmitter assembly as described in Series 78, plus other associated parts, e.g. receiver, motor generator, send-receive switch, etc. This series refers to the hardware, not the installed system only. When installed, it falls under Series 6-9. The series includes: abstracts; articles; bid summaries; blueprints; contracts; correspondence, 1911-1923; instructions and descriptions; diagrams; drawings; illustrations; news releases; notes; periodical clippings; photographs; sketches; and testimonies.
Series 82 consists of Clark's own typed notes; correspondence, 1935-1949; news clippings; news releases (RCA's "firsts"); periodical clippings; and photographs of "Firsts" in radio: what, when, where and how. Cross-indexed in the appropriate file for the event, person, or apparatus being considered.
Series 85 contains advertisements; articles; correspondence, 1906--1926; drawings; graphs; illustrations; maps; messages from ships to shore; newsclippings; news release; periodical clippings; photographs; reports; and tests, measurements, and experiments of receiving stations or receivers, especially in terms of distance covered. See Series L for index to photographs in Bound Volumes.
Series 87 contains photographs and news clippings of groups and individual radio people, such as executives, inventors and operators. For example, David Sarnoff (Box 378=0001-0320). See also Series M for list of photographs of Sarnoff arranged by document numnber. It does not include photographs of broadcast, television, and phonograph artists and stars. These are filed in Series 143. See Series K for index to many photographic prints in this Series.
Series 90 contains literature regarding radio terms, alphabetically listed, with definitions. Included are abstracts; articles; correspondence; data regarding wireless terminology; glossary of terms published in the yearbooks of 1913 - 1915; list of radio terms and classification numbers; news clippings; notes; reports of committees on standardization, the Institute of Radio Engineers, for 1913, 1915, 1922, 1926, 1927, and 1928; standardization rules; and technical information booklets.
Series 92 contains material that describes apparatus, systems, methods and measurements of static-reducing devices. There is data as to form of static, including "term interference", interference due to lightning, and interference due to other natural causes. Included are abstracts of letters; abstracts from USN semi-monthly Radio Reports, August, 1919-October 1920; articles; blueprints; booklets; brief histories; claims; several copies of communication from the International Union of Scientific Radio Telegraphy; correspondence; data regarding Rogers and his underground antenna; descriptions; diagrams; experiments reports; extracts from Yearbook of W.T. & T., 1916, from New York Herald, 1899, and from Radio Report, 1919; graphs; illustrations; litigations; manuscripts; memoranda; minutes; news clippings notes; pamphlets; parts catalogue; patents; a few photographs; reports; reprints from journals; and tests. Box 385 deals specifically with static patents, and box 386 treats static reducing systems with a focus on Weagant's work.
Series 93 concerns methods of recording radio signals on paper, wax cylinders, and other media. Advertisements, blueprints, bulletins, charts, correspondence, data on radio signals and on recorder tapes, drawings, instructions, and instruction books, journals, clippings, reports, sales bulletins, service notes and test results. Includes ink and other recorders and listener and audience recorders.
Series 95 contains speeches by David Sarnoff (Box 390); transcripts of broadcasts by Orestes H. Cladwell and Gordon Nugent, 1941 (Box 391); and speeches and writings of other radio experts.
Series 96 contains abstracts of speeches; articles; booklets; brochures; correspondence, 1922-1943; illustrations; news clippings; news releases; periodical clippings; and photographs regarding radio as a factor in education.
Series 98 contains information on special forms of broadcasting e.g. church broadcasting; broadcasts for political purposes; for advertising; and for sales promotion, but does not include school broadcasts. Included are news clippings; notes; periodical clippings; photographs; a booklet; and some correspondence.
Series 99 contains abstracts; articles; booklets; correspondence, 1914-1919; 1930-1943; descriptions; illustrations; news clippings; news releases; periodical clippings; and photographs.
Series 100 consists of material pertaining to the history of radio work in the U.S. Navy. It contains history and general description of systems, apparatus, and usages. There are specific descriptions under appropriate series, as Series 46 for code receivers, Series 6 for shore stations, Series 7 for ship installations, Series 72 for portable sets, Series 66 for antennas and masts, etc.
The material in Series 100 consists of copies of affidavits; abstracts of instructions from Monthly Radio Reports; agreements; articles; blueprints; booklets; catalogues; charts; contracts; correspondence; data regarding transmitting condensers, Interdepartmental Radio Board, USNM - U.S. Army radio receiving system; descriptions; diagrams; directions; graphs; histories including G.H. Clark's "The Development of Radio in the U.S. Navy" (493 pages) "Radio in War and Peace" (Box 408D); instructions; job order; portions of journals; record of litigation; memoranda; messages; news clippings; notes; pamphlets; papers presented; patent copies; photographs of stations, men apparatus, and equipment; proceedings in the US. Senate; releases; reports; requisitions; specifications; statements and testimony; and US. Civil Service Examinations for Radio Aid 1919, for Radio Instructor 1920, and for Expert Radio Aid 1914 and 1919.
See Series L for index to photographs in Bound Volumes.
Series 101 contains advertisements, blueprints, bulletins, charts, correspondence, drawings, instructions, journals, records of litigation, maps, news clippings, news releases, notes, operating instructions, pamphlets, patent copies, periodicals and periodical service notes, scientific papers, specifications, and test reports on the early use of wireless telegraphy and telephony covering the period from the Boer War (1899) to 1945. Information concerns the military use of wireless equipment. Included are compilations under headings: History of Army Radio; Radio in War; Lectures before Sarbonne, Paris 1919; bulletins, procurement files and history of the Signal Corps; and the history of early wireless use.
Series 102 contains abstracts; articles; blueprints; booklets; charts; circuit layouts; correspondence, 1904-1920; descriptions; diagrams; drawings; history of apparatus for radio telegraphy; illustrations; maps; operating instructions; periodical clippings; photographs; schedules of supplies; and specifications for transmitting and receiving systems. Also covered is comparisons of spark arc, and vacuum tube transmitters. The comparative prices and distances covered for some power input is examined. The chronological history of sequence from spark to U.T. sets is documented.
Series 103 contains advertisements; correspondence, 1910-1916; descriptions; diagrams; drawings; graphs; information bulletins; instructions; news clippings; news releases; notes; pamphlets; periodical clippings; specifications; and technical information booklets.
Series 108 contains the files of Major Donald D. Millikan, code and cipher expert, and is comprised of examples from the Cryptology School both he and the Army ran including: announcements; questions and answers to exercises; class lists by student; correspondence, 1915-1937; data sheets; home work; memoranda; problems in cryptanalysis; and tests. Also there is a typed "book" titled Cryptography and Crystanalysis by Milikan. Also included are articles; cartoons; code tapes; codes; news clippings; periodical clippings; and photographs pertaining to this subject.
Series 109 contains abstracts of yearbooks; addresses of U.S. and foreign broadcasting stations; advertisements; booklets; call letters of all U.S. stations, amateur stations and many in foreign countries; charts; diagrams; directories; lists of all stations in U.S.; maps; news clippings; periodical clippings; and program schedules.
Series 112 contains abstracts of contracts for fairs, shows, advertisements; brief histories; copies of contracts; cartoons; charts; a large amount of correspondence; descriptions; designs and layouts; drawings; instructions; listings of radio shows; news clippings; notes of exhibitions, regarding shows etc.; pamphlets; photographs; proposals; records releases; rules and regulations; specifications; speeches; and telegrams.
Photos of displays
[Radio Corrporation of America (RCA) booth at the Bamberger Radio Exhibition, black & white photoprint]
AC0055-0000004.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
The RCA Line, [black & white photoprint]
AC0055-0000005.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Display of RCA radios. Photograph by Crossman.
[De Forest Exhibit at the St Louis Exposition, black-and-white photoprint.]
AC0055-0000103.tif (AC Scan)
90-10146 (SI neg number)
Silver gelatin on paper.
In black copy print notebook 3
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Wireless Auto No.1 sits in the center of the exhibit.
Series 114 contains advertisements; articles; booklets; brochures; bulletins of apparatus; interdepartmental correspondence, 1929; descriptive bulletins; descriptions; disgrams; engineering reports; installation manuals; instruction books; model number lists; news releases; pamphlets; parts lists; periodical clippings; sales bulletins; sales catalogues; and service notes.
Series 116 contains abstracts; copies of congressional bills and of the Congressional Record; bulletins; circulars; correspondence, 1912-1931; copies of "Foreign Communication News"; foreign trade letters; graphs; instructions; litigation case description; memoranda; news clippings; news releases; notes; order, F.C.C.; periodical clippings; photographs; reports; requested assignments; regulations; statements; surveys; and testimonies about the American government's civilian radio activities. Topics included are the Bureau of Standards; F.C.C.; international and national propaganda; government control of radio; Freedom of Radio (formerly series 214); and speeches and acts of Congress regarding radio. The activities of the Patent Office and the Courts are not included in this series. The series includes correspondence, memoranda and other materials produced by RCA executives concerned with government regulation of the radio industry.
Series 117 contains tables, charts, and graphs giving data on transmitter/condensers, on resonance curves, wave length, frequency and oscillation, and tables on sparkling distances. Also includes correspondence, drawings, bulletins, instructions, clippings, reports, Pickard's lists of transmitter and receiver adjustments, and conversion tables.
Series 120 is arranged alphabetically (with a few exceptions), concerning litigation on Radio subjects, including patents (but not including patents per se) consists of abstracts; articles; bills of particulars; booklets; trial briefs; contracts 1935, 1936-1942; court proceedings; data regarding litigation; decisions; depositions; drawings; court exhibits; graphs; litigation opinions of the courts; periodical clippings; photographs; reprints; index of Farnsworth Bound Volumes; sketches; specifications; statements; subpoena; telegrams; and testimonies.
Series 121 contains correspondence; news clippings; periodical clippings, papers; reports; and lists and handbooks describing petitions, Congressional actions, and certifications. Also included is a brief historical outline, excerpts from Air Law Review, and several RCA in-house publications. The materials concern litigation, legislation, and regulations governing the use of radio.
Series 122 contains materials relating to the history of Radio Clubs between 1907 and 1946.
Series 123 contains advertisements; articles; booklets; correspondence (1929; 1931;1938-40); installation instructions; news clippings; operating instructions; periodical bulletins; and technical papers regarding audio frequency and special applications of radio frequency apparatus. Subjects include "Radio Music," Theremin, Color Organ and Photophone. This series does not include broadcasting or radio telephony.
RCA Sound Reproducing Equipment
Series 124 contains articles, booklets, a "Calendar of Wireless-Radio-Television"; chronological lists; correspondence, 1931-33, 1938; pamphlets; periodicals concerning notable events in radio; news clippings, and progress reports pertaining to the history of radio and early T.V. Sources are Navy, Weather Bureau, various publications, and the RCA Yearbooks of Wireless Telegraphy and Telephony. Also included are calendars, excerpts of papers and articles, and several "Marconi" Chronologies.
Series 125 contains copies of United States patents relating to radio and related electrical technologies, arranged by patent number [c. 32,471 (1861)- 2,326,836 (1941)]. Also included is a separate section of Fessenden Patents. Several boxes contain information on patent practices: materials include articles; booklets; correspondence 1907-1913; 1918-26;1929-1930; 1949 diagrams; defendants' exhibits; news clippings; pamphlets; patent applications (U.S., British, and German); patent specifications; periodical clippings; and several photographs. There are also materials relating to various patent suits: Langmuir Patent Record and Argument; Canadian General Electric vs. Fada Radio, 1927. Record of suits on wireless patents (1922-1929). Brody Patent Collection (see list in box).
Series 126 contains advertisements; an advertising poster for Columbia Phonographs; articles; booklets; circular letters to distributors and dealers; correspondence, 1931, 1932, 1935, 1944; instructions for operation and service; news clippings; news releases; RCA Victor order form for needles and accessories; parts catalogues; photographs; sales literature; service data; service notes; technical information booklets. Also includes advertisements for phonographs and phonograph records, 1893-1927. See Series 45 regarding combination sets (combined radio sets and phonographs).
Series 127 contains articles; booklets; correspondence, 1914-1916, 1918, 1922, 1924, 1931, 1935; newsclippings; news releases; periodical clippings; photographs; and reports concerning the theory, history, related apparatus and applications of the Piezo-electric effect.
Series 128 contains advertisements; articles; apparatus orders of the Federal Telegraph Co.; blueprints; booklets of the Telefunken System of Wireless Telegraphy; correspondence, 1913, 1916 & 1918; diagrams; drawings; graphs, memoranda, notes; photographs; schematic diagrams and tests. There are general descriptions of systems but usually items are designated by name of inventor, as "Poulsen System."
Series 129 contains articles; booklets; descriptions for operation; diagrams; instructions; instruction books; news clippings; operating instructions; periodical clippings; photographs; and schematic tracings of spark transmitting and receiving systems. There are general descriptions of systems but usually items are designated by the name of the inventor, such as the "Fessenden system."
Series 130 on vacuum tube transmitting and receiving systems consists of articles; booklets; correspondence, 1937; schematic diagrams; graphs; and news clippings. It includes general descriptions of systems and descriptions of systems designated by the name of the inventor, such as the "De Forest system". This series includes both code and speech systems, though the latter are more minutely described in Series 132.
Series 132 contains advertisement flyers; booklets; bulletins; catalogues; descriptions; diagrams; instructions; instruction books; log of installation and operation of De Forest Radiophones in the U.S. Navy; notes; periodical clippings; photographs and reports.
Series 133 contains advertisements; articles; booklets; correspondence, 1923, 1924, 1926, 1929, 1935, 1936, 1939; descriptions; drawings; facsimiles of photo-radio; graphs; news clippings; photographs; and specifications. See also Series 54.
Series 134 contains abstracts of Public Opinion; RCA annual report excerpts; articles; booklets; correspondence, 1922; 1930-1947; Dempsey-Carpentier boxing match; publicity documents; memoranda; news clippings; news releases; periodical clippings; and photographs. This series includes earlier methods, such as sending messages by broadcast from the flagship of a fleet to all other vessels of the fleet by spark telegraphy. It also refers to communicating with the general public by radiotelephony. See Series L for index to photographs in Bound Volumes.
Radio Broadcasting
[Applause Cards, postcard]
AC0055-0000039.tif (AC Scan)
Series 135 contains an abstract; an advertisement; booklets; brochures; a catalogue; correspondence, 1905, 1907-1910, 1912-1915, 1919-1924, 1930-1932, 1935 & 1943; descriptions; diagrams; drawings; instructions; journals, and a log of installation and operation De Forest Radiophones in the U.S. Navy. Also included are memoranda; minutes; news clippings; news releases; notes; periodical clippings; a petition for a Canadian Patent; photographs; a price list of the international rates of calls from the Chesapeake and Potomac Telephone Co. in Washington, D.C.; reports; a radiogram; a Radiophone Reception Log; a telephone conversation between Professor Fessenden and Mr. J.G. Patterson; and Radio Telephone Tests.
Radio Telephony
[Transoceanic] Cable Communications of the World, [map.]
AC0055-0000061.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Printed in The Electrician
Series 136 contains booklets; bulletins; correspondence, 1932, 1933, 1934, 1938, 1941 & 1943; memoranda; news clippings; news releases; notes; a photograph and reports.
Series 138 contains booklets; correspondence, 1924, 1931 & 1935; maps; news clipping; notes; periodical clippings; photographs and reports.
This series contains booklets; a bulletin; correspondence, 1929-1931; "Applicants Description of Apparatus"; news clippings; notes; periodical clippings; photographs; and reports.
Series 140 contains articles; booklets; correspondence, 1906, 1907, 1909, 1918, 1921, 1936; diagrams; drawings; a graph of wave length and day range of Radio telegraph; journals; maps; news clippings; news releases; notes; periodical clippings; standards on radio wave propagation, 1942; studies; and technical instructions. This series concerns the theoretical discussions on transmission, reception, effect of different wave length, heavy-side layer effect, effect of different spark notes; and C.W. vs. damped wave for signaling by code. It is cross-referenced as to subject, author, and events mentioned.
Series 142 contains advertisements; articles; booklets; a biographical article on C. Francis Jenkins; bulletins; correspondence, 1926, 1928-1931, 1933-1936, 1939, 1940, 1942; diagrams; graphs; maps; a lithograph; memoranda; minutes; news clippings; news releases; notes; periodical clippings; photographs; program schedules; reports; specifications; a telegram and testimonies.
History of Television
History of Television
Series 143 consists of photographs of people seen and heard on Jenkins Television Station W2XCR and Radio Station WGBS in 1931. Among those photographed are Primo Carnera; Maria "Gamby" Gamborelli, and Lionel Atwill. See also series 64.
Series 144 contains correspondence, 1914, 1923, 1930, 1932, & 1938; memoranda; news clippings, including a scrapbook on Orson Wells's, "The War of the Worlds"; news releases; periodicals; periodical clippings; and photographs of pamphlet covers relating to publications about radio broadcasting.
Series 145 contains Minutes of Radio Societies and booklets; journals; a yearbook, and a trade directory.
Series 146 contains booklets; catalogues; correspondence, 1922, 1929-39, 1945 & 1946; descriptions; lists of employees; news clippings; pamphlets; periodical clippings; reports; reprints; and telegrams.
Series 147 contains advertisements; booklets; brochures; bibliographies; correspondence, 1930; lists of radio publications; notes; periodical clippings; a price list of books about radio in education; reports and radio references. This series on bibliographies includes chiefly magazines. Chronolgically listed.
Series 148 contains articles; drawings; maps; news clippings; notes; periodical clippings; photographs; and reports dealing with aircraft auxiliary and guidance apparatus e.g. beacons, altimeters, leader gear and landing aids. It does not include direction finder; Loran: Shoran.
Series 150 contains a bibliography on the measurement of signal intensity; booklets; charts; correspondence, 1906, 1913, 1914, 1918, 1919; graphs; instrucitons; notes; periodical clippings; photographs and reports.
This series contains booklets; charts; correspondence 1916, 1917, 1923, 1928, 1929, 1932, 1935, 1940 and 1945; diagrams; graphs; instructions; memoranda; news clipings; news releases; notes; patent copies; periodical clippings; photographs; reports and specifications. All materials relate to the history of the use of radio communications in aircraft. See Series 12 for use in ground stations.
This series contains articles; blueprints; booklets; extracts from briefs; correspondence 1906, 1911-22, 1926, 1932, 1931; news clippings; notes papers; photographs; reports; sketches and legal testimony.
This series contains articles; booklets; correspondence, 1904, 1905, 1911, 1921, 1923, 1924; graphs; memoranda; news clippings; pamphlets; and periodical clippings about the reduction of man-made interference to reception of radio signals, including interference from power lines and power apparatus, e.g. electric apparatus on automobiles, aircraft and household appliances. The series does not include interference from atmospheric sources, transmitters, receivers, or automobile "wheel static."
This series contains articles; booklets; correspondence:1930 & 1935; memoranda; news clippings; news releases; periodical clippings; photographs; and reports. Among the topics included are use of radio and electricity in therapeutics; radio's effect on plants; germicidal effect of radio; radio used in massage; diathermy in medicine; and short wave therapy.
This series contains articles; booklets; correspondence: 1906 & 1923; graphs; news clippings; periodical clippings; a photograph; reprints and sales releases. See Series 92 for static effects on receivers.
This series contains advertisements; articles; correspondence: 1929, 1931, 1935; illustrations; instructions; instruction books; memoranda; news clippings; news releases; pamphlets; periodicial clippings; photographs; sales bulletins; sales releases and sales literature.
This series consists of poetry, jokes, and humorous stories regarding radio and the phonograph, including advertisements; articles; NBC Calendar, 1939; correspondence, 1939, 1943; news clippings; notes; periodical clippings; sheet music; and stories.
Cartoons
Cartoons
Mr. Jones of NBC to see Mr. Wilmott, with 3,500,000 MORE radio families. [cartoon]
AC0055-0000040.tif (AC Scan)
This series contains an affadavit; articles; booklets; correspondence: 1899, 1901, 1922, 1941, 1942; diagrams; news clippings; notes; audio play scripts; sketches; and specifications.
This series concerning television methods and systems contains articles; booklets; news clippings; notes; pamphlets; periodical clippings; and photographs.
This series contains articles; correspondence 1913, 1919, 1939; descriptions; index to defendants Exhibit G, Dubilier Condenser Co. vs. Wireless Specialty Apparatus Company; memoranda; and news clippings.
See also Series 169, Cartoons, 1916-1949.
This series contains booklets; correspondence 1920, 1924, 1926-1928, 1932, 1936, 1941; news clippings regarding Management guidance of the Naval Communications System; and news releases.
This series contains articles; booklets; correspondence, 1922; news clippings; and periodical clippings.
This series contains blueprints; correspondence, 1930-1932; diagrams; and illustrations related to television transmitters.
A complete item level finding aid for this series is available in the Archives Center.
Green numbers on photoprints: 1-14
Early Marconi apparatus, tests and stations
Green numbers on photoprints: 15-85
[Wellfleet radio station, black-and-white photoprint.]
AC0055-0000043.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Guglielmo Marconi and six other men at Wellfleet radio station, black-and-white photoprint.]
AC0055-0000044.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Early Wireless apparatus, tests and stations
Green numbers on photoprints: 86-143
[Display of patent drawing and object for Lee DeForest's wireless telegraphy, black & white photoprint]
AC0055-0000020.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Patent application filed 27 August 1906.
Green numbers on photoprints: 144-172
Green numbers on photoprints: 173-176
Green numbers on photoprints: 177-184
Green numbers on photoprints: 185-190
Green numbers on photoprints: 191-201
Green numbers on photoprints: 202-221
Green numbers on photoprints: 222-292
Alternator
Green numbers on photoprints: 293-298
[Siasconset, Massachusetts radio station, black-and-white photoprint.]
AC0055-0000045.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Siasconset, Massachusetts radio station, black-and-white photoprint.]
AC0055-0000046.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Green numbers on photoprints: 299-302
Green numbers on photoprints: 303-322
Green numbers on photoprints: 236;238-241; 287; 292; 297 & 298
Green numbers on photoprints: 303-315
Green numbers on photoprints: 323-326A
Green numbers on photoprints: 327-351
Green numbers on photoprints: 352-379 neg #s: 355, 360, 364, 366, 367, 368
Green numbers on photoprints: 380-401A
Green numbers on photoprints: 402-473
Green numbers on photoprints: 474-504
Green numbers on photoprints: 505-514
Green numbers on photoprints: 515-519
Green numbers on photoprints: 520-540
Green numbers on photoprints: 541-605
Green numbers on photoprints: 606-612 Neg #s: 613 & 614
RCA Messengers
Green numbers on photoprints: 615-626
[Large group of messengers, black & white photoprint]
AC0055-0000014.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Posed in front of Radio Corporation of America (RCA) World Wide Wireless entrance.
[Messenger boy receiving an RCA radiogram from clerk for delivery, black & white photoprint]
AC0055-0000015.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
At Broad Street, New York City.
KDKA
Green numbers on photoprints: 627-641
[Radio Statio KDKA, black & white photoprint]
AC0055-0000006.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Wireless room on roof of "K" building East Pittsburg.
[Wireless room on roof of KDKA building, East Pittsburgh, Pennsylvania, black & white photoprint]
AC0055-0000016.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Broadcasting studios
Green numbers on photoprints: 642-692
[Man speaking or singing to microphone in radio studio while another man watches, black-and-white photoprint.]
AC0055-0000062.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Music director Rosario Bourdon conducting Victor Symphony Orchestra, black-and-white photoprint.]
AC0055-0000108.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Stroh violin in right foreground
Green numbers on photoprints: 693-696
Green numbers on photoprints: 697-728
Green numbers on photoprints: 729-794
Green numbers on photoprints: 795-828
Green numbers on photoprints: 830-848
Green numbers on photoprints: 849-858
Green numbers on photoprints: 859-879
Green numbers on photoprints: 880-884
Green numbers on photoprints: 885-899
Green numbers on photoprints: 900-946
Green numbers on photoprints: 947-958
Green numbers on photoprints: 959-961
Green numbers on photoprints: 962-968
Green numbers on photoprints: 970-978
Green numbers on photoprints: 979-981
Green numbers on photoprints: 982-990
Green numbers on photoprints: 991-1031
Green numbers on photoprints: 1032-1066; missing 1040, contains 1 negative
Green numbers on photoprints: 1067-1104
Green numbers on photoprints: 1105-1144
Green numbers on photoprints: 1145-1172
Green numbers on photoprints: 1173-1200; contains 1 negative
Green numbers on photoprints: 1201-1238
Green numbers on photoprints: 1239-1279
Green numbers on photoprints: 1280-1299
Miscellaneous Radiolas
Green numbers on photoprints: 1300-1372
[Radiola, black-and-white photoprint.]
AC0055-0000035.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Brunswick Radiolas
Green numbers on photoprints: 1373-1428
[Cabinet with Hyperion phonograph, black & white photoprint]
AC0055-0000022.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Unidentified Radiolas
Green numbers on photoprints: 1429-1477; first two images are unnumbered
[Cabinet with phonograph and AR-813 radio, black & white photoprint]
AC0055-0000021.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[ER-1620 Radio Set, exterior and interior views, black & white photoprint]
[ER-1620 Radio Set, exterior and interior views, black & white photoprint]
AC0055-0000023.tif (AC Scan)
AC0055-0000024.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Green numbers on photoprints: 1478-1493
Green numbers on photoprints: 1494-1510
Green numbers on photoprints: 1511-1541
Green numbers on photoprints: 1542-1560
Green numbers on photoprints: 1561-1582
Green numbers on photoprints: 1583-1629
Green numbers on photoprints: 1630-1644
Green numbers on photoprints: 1645-1648
Green numbers on photoprints: 1649-1667
Green numbers on photoprints: 1668-1674
Green numbers on photoprints: 1675-1683
Green numbers on photoprints: 1684-1686
Green numbers on photoprints: 1687-1690
Green numbers on photoprints: 1691-1705
Green numbers on photoprints: 1706-1733
Green numbers on photoprints: 1734-1741
Green numbers on photoprints: 1742
Green numbers on photoprints: 1743-1744
Green numbers on photoprints: 1745-1747
Green numbers on photoprints: 1748-1752
Green numbers on photoprints: 1753-1755
Green numbers on photoprints: 1756-1757
Green numbers on photoprints: 1758-1764
Green numbers on photoprints: 1765-1766
Green numbers on photoprints: 1767-1770
Green numbers on photoprints: 1771-1774
Green numbers on photoprints: 1775-1784
Green numbers on photoprints: 1785-1800
Green numbers on photoprints: 1801-1904
Green numbers on photoprints: 1905-1922
Green numbers on photoprints: 1923-1949
Green numbers on photoprints: 1950-1957
Green numbers on photoprints: 1958-1965
Green numbers on photoprints: 1966
(Consists primarily of RCA publicity shots demonstrating the versatility and utility of radio)
Superhetrodynes in the home
Green numbers on photoprints: 1967-1987
[Two women and a man seated around a tabletop radio, black-and-white photoprint.]
AC0055-0000059.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Two men playing dominoes and woman adjusting a radio dial on a porch, black-and-white photoprint.]
AC0055-0000060.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Man showing a radio to another man from the back of a truck, black-and-white photoprint.]
AC0055-0000063.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Woman in kitchen; canning and listening to the radio, black-and-white photoprint.]
AC0055-0000064.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Man adjusting a radio knob while two women watch, black-and-white photoprint.]
AC0055-0000107.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Radiolas in the home [organized by model number]
Green numbers on photoprints: 1988-2077
[Two men and two women listening to Radiola models 28 and 104, black & white photoprint]
AC0055-0000013.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Young man demonstrating a radio to a woman, two girls and a boy on the front porch of a house, black-and-white photoprint.]
AC0055-0000054.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Man looking at pocket watch and listening to radio with headphones, black-and-white photoprint.]
AC0055-0000065.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Three women, two men and a boy in room with piano listening to the radio, black-and-white photoprint.]
AC0055-0000066.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Young man and woman listening to the radio, black-and-white photoprints.]
[Young man and woman listening to the radio, black-and-white photoprints.]
AC0055-0000067.tif (AC Scan)
AC0055-0000068.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Two separate views, in same interior.
[Woman adjusting radio dial, black-and-white photoprint.]
AC0055-0000069.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Man adjusting radio dial while woman watches, black-and-white photoprint.]
AC0055-0000070.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Man wearing headphones to listen to the radio while looking at a book, black-and-white photoprint.]
AC0055-0000071.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Two women listening to the radio, black-and-white photoprint.]
AC0055-0000072.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Two women adjusting a radio dial with a man and woman seated at a table in the background, black-and-white photoprint.]
AC0055-0000073.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Two women and two men playing cards while one man adjusts a radio dial, black-and-white photoprint.]
AC0055-0000074.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Two couples dancing while another woman adjusts a radio, black-and-white photoprint.]
AC0055-0000075.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Two couples listening to a radio, black-and-white photoprint.]
AC0055-0000076.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[A woman adjusting a radio while a man looks on; a second woman writing at a desk, black-and-white photoprint.]
AC0055-0000077.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[A man adjusts a radio while a man and two women watch and listen, black-and-white photoprint.]
AC0055-0000078.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Four men in tuxedos standing or sitting around a radio, black-and-white photoprint.]
AC0055-0000079.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[A woman leaning toward a radio with a dreamy expression, black-and-white photoprint.]
AC0055-0000080.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[A man adjusting a radio with a woman standing to the side, black-and-white photoprint.]
AC0055-0000081.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Three couples dancing to a radio, black-and-white photoprint.]
AC0055-0000090.tif (AC Scan)
83-16782 (SI neg number)
Silver gelatin on paper.
In black copy print notebook 1
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Two men adjusting a radio knob, black-and-white photoprint.]
AC0055-0000091.tif (AC Scan)
90-10151 (SI neg number)
Silver gelatin on paper.
In black copy print notebook 3
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Man and woman seated at a table and listening to radio on headsets, black-and-white photoprint.]
AC0055-0000092.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Radiolas in the home - unidentified
Green numbers on photoprints: 2078-2110
[A man reading a newspaper and listening to a radio with a dog at his feet, black-and-white photoprint.]
AC0055-0000082.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[A woman seated next to and adjusting a radio, black-and-white photoprint.]
AC0055-0000083.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[A man and woman listening to a radio using headsets, black-and-white photoprint.]
AC0055-0000084.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Four men and three women listening to a radio, black-and-white photoprint.]
AC0055-0000085.tif (AC Scan)
79-10650 (SI neg number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Elderly African American man sitting in front of a radio, black-and-white photoprint.]
AC0055-0000109.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Green numbers on photoprints: 2111-2134
Aircraft radio
Green numbers on photoprints: 2135-2144
Green numbers on photoprints: 2145-2177
Radio aboard ship [listening to radio on ship N operating rooms]
Green numbers on photoprints: 2178-2204
[A man and two women listening to a radio using headphones while sitting at the stern of boat, black-and-white photoprint.]
AC0055-0000086.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Radio in the hospital
Green numbers on photoprints: 2205-2210
[Hospital staff around a young patient listening to radio using headphones, black-and-white photoprint.]
AC0055-0000087.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Two nurses listening to radio, black-and-white photoprint.]
AC0055-0000088.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Green numbers on photoprints: 2211-2226
Green numbers on photoprints: 2227-2276
Green numbers on photoprints: 2277-2283
Uses of radios
Green numbers on photoprints: 2284-2287
[Three women listening to a radio while laying on a cot in a tent, black-and-white photoprint.]
AC0055-0000089.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
99-381 (OPPS Neg. No.)
Silver gelatin on paper.
From Series A, subseries 7, box 14, "advertisements" folder.
Rubber stamp imprint on verso: "Credit line 'Radio Corporation of America' / Photo supplied by Information Bureau / Radio Corporation of America / 233 Broadway, New York/ Thos. Coke Knight, Photographer, N.Y."
Rubber stamp on verso of print: CREDIT LINE "RADIO CORPORATION OF AMERICA" / PHOTO SUPPLIED BY / INFORMATION BUREAU / RADIO CORPORATION OF AMERICA / 233 BROADWAY, NEW YORK / THOS. COKE KNIGHT, Photographer, N.Y.
Some yellowing and staining of unmounted print.
Unrestricted research use on site by appointment. Unprotected photographs must be handled with cotton gloves.
Photograph of 3 framed RCA advertisements: RCA Radiola 28, "Theatre of the Air, and RCA Loud Speaker Model 100 ("A Triumph!"). No. 2113 in file.
Copy prints available. Reproduction restrictions due to copyright. Order from neg. no. 99-381.
Green numbers on photoprints: 2288-2297
Green numbers on photoprints: 2298-2303
Belfast, Maine
Green numbers on photoprints: 2304-2307
[Two men using receiving apparatus for reception of English broadcasting, black-and-white photoprint.]
AC0055-0000110.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Exterior view of Belfast, Maine radio station, black-and-white photoprint.]
AC0055-0000111.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Rear view of vacuum tube radio transmitting equipment, black-and-white photoprint.]
AC0055-0000112.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Three men holding various sized vacuum tubes, black-and-white photoprint.]
AC0055-0000113.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Chatham, Massachusetts
Green numbers on photoprints: 2308-2314
[RCA Marine Station in Chatham, Massachusetts, black-and-white photoprint.]
AC0055-0000047.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Radio operators receiving transmissions from SS Leviathan and SS Mauretania on 2100 m. band.
Marion, Massachusetts
Green numbers on photoprints: 2315-2341
[Hotel Custer & Cothazer in Marion, Massachusetts, black-and-white photoprint.]
AC0055-0000048.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Main antenna mast line for the RCA Station in Marion, Massachusetts, black-and-white photoprint.]
AC0055-0000049.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Chief Engineer's residence for the RCA Station in Marion, Massachusetts, black-and-white photoprint.]
AC0055-0000050.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
A man and boy are on the lawn in front of the house.
[Radio towers and lines for the RCA Station in Marion, Massachusetts, black-and-white photoprint.]
AC0055-0000051.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Power House front showing antenna lead in and number 1 tuning coil, Marion, Massachusetts, [black-and-white photoprint.]
AC0055-0000052.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Green numbers on photoprints: 2342-2354
Green numbers on photoprints: 2355-2394
Rocky Point, Long Island
Green numbers on photoprints: 2397-2442
Antenna Combination for Radio Central Station diagram, [black & white photoprint]
AC0055-0000017.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Concept of future RCA radio central system off of Long Island Sound, [black & white photoprint]
AC0055-0000018.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Green numbers on photoprints: 2443-2447
Tuckerton
Green numbers on photoprints: 2448-2465
[850 foot tower and general view of radio station at Tuckerton, New Jersey, black & white photoprint]
AC0055-0000019.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Green numbers on photoprints: 2466-2470
Green numbers on photoprints: 2471-2547
Green numbers on photoprints: 2548-2567
Manufacturing
Green numbers on photoprints: 2568-2611
[Men assembling RCA radio sets in a Westinghouse factory, black-and-white photoprint.]
AC0055-0000106.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Green numbers on photoprints: 2612-2668
Green numbers on photoprints: 2669-2689
Green numbers on photoprints: 2690-2752
Green numbers on photoprints: 2753-2803
Tube testing
Green numbers on photoprints: 2804-2842
[Machine to test the radiation in tubes, black-and-white photoprint.]
AC0055-0000041.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Green numbers on photoprints: 2843-2846
Green numbers on photoprints: 2847-2869
Green numbers on photoprints: 2870-2874
Green numbers on photoprints: 2875-2886
Green numbers on photoprints: 2887-2894
Green numbers on photoprints: 2895-2942
Green numbers on photoprints: 2943-2964
Television [includes Cathode Ray Oscilliograph]
Green numbers on photoprints: 2966-3030
Green numbers on photoprints: 3031-3090
Theremin
Green numbers on photoprints: 3091-3094
[Alexandra Stepanoff playing RCA theremin, black & white photoprint]
AC0055-0000002.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Green numbers on photoprints: 3095-3104
Green numbers on photoprints: 3105-3122
Green numbers on photoprints: 3123-3131
Green numbers on photoprints: 3132-3148
Green numbers on photoprints: 3149-3162
Green numbers on photoprints: 3163-3180
Green numbers on photoprints: 3181-3197
Green numbers on photoprints: 3198-3205
Green numbers on photoprints: 3206-3213
Green numbers on photoprints: 3214-3218
Green numbers on photoprints: 3219-3223
Green numbers on photoprints: 3224-3232
Green numbers on photoprints: 3233-3243
Green numbers on photoprints: 3244-3254
Miscellaneous
Green numbers on photoprints: 3255-3329
[RCA exhibit at Grand Central Palace, black & white photoprint]
AC0055-0000007.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[RCA receiver exhibit with price cards, black & white photoprint]
AC0055-0000008.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Second district convention at Hotel Pennsylvania in New York City.
17 images
Armstrong
3 images
[Captain Edwin H. Armstrong, black-and-white photoprint.]
AC0055-0000036.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Dressed in World War I uniform.
DeForest
20 images
88-624 (OIPP Neg. No.)
Silver gelatin on paper.
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Published in Amy Henderson, On the Air: Pioneers of American Broadcasting. Washington: published by the Smithsonian Institution Press for the National Portrait Gallery and The Museum of Broadcasting, 1988 (catalog of an exhibition), p. 29.
Lee De Forest portrait, [black-and-white photoprint.]
AC0055-0000102.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Fessenden
5 images, 1 negative
[Reginald Fessenden and asistants at Brant Rock, Massachusetts, black-and-white photoprint.]
AC0055-0000104.tif (AC Scan)
89-3804 (SI neg number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
[Fessenden's engineers, black-and-white photoprint.]
AC0055-0000105.tif (AC Scan)
86-10566 (SI neg number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
1 image
Marconi
49 images, 8 negatives
88-627 (OIPP Neg. No.)
Silver gelatin on paper.
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Photographer unidentified.
Published in Amy Henderson, On the Air: Pioneers of American Broadcasting. Washington: published by the Smithsonian Institution Press for the National Portrait Gallery and The Museum of Broadcasting, 1988 (catalog of an exhibition), p. 27.
[Guglielmo Marconi broadcasting from his yacht 'Electra,' black & white photoprint]
AC0055-0000012.tif (AC Scan)
88-16395 (SI negative number)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
20 images
29 images
1 image
13 images, 1 negative
98 images
98 images
80 images
47 images
27 images
26 images
32 images
7 images
10 images, 15 negatives
24 images, 5 negatives
10 images, 4 negatives
10 images, 1 negative
9 images, 27 negatives
13 images
38 images
19 negatives
18 negatives
18 negatives
16 negatives
15 negatives
21 negatives
This series consists of photgraphs removed from the main body of the Clark Radioana Collection by the Division of Electricity, NMAH, for microfilming. This task was not accomplished. They are filed by the "class' or series from which they were removed. They have Clark's Navy filing system number on them. Not all series are represented.
Class or Series 48, 49, 50, 51
[Diversity receivers at Riverhead, black & white photoprint]
AC0055-0000026.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Photograph by Radio Corporation of America (RCA).
[Model AR 1300 radio receiver and model AA 1400 amplifier detector, black & white photoprint]
AC0055-0000027.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Photograph by Radio Corporation of America (RCA).
[Model of radio receiver for duplex operation, exterior and interior views, black & white photoprint]
[Model of radio receiver for duplex operation, exterior and interior views, black & white photoprint]
AC0055-0000028.tif (AC Scan)
AC0055-0000029.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Photograph by General Electric Company.
[Radiola Radio Concert Amplifier Model AA 1376 made for RCA, black-and-white photoprint.]
AC0055-0000037.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Class or Series 52, 53, 59, 60, 61, 62, 63, 64
[Bunsen burner detector, black-and-white photoprint.]
AC0055-0000034.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Alledgedly used by Lee DeForest in his "salt detector" tests.
[Crystal detector on display with plaque, black-and-white photoprint.]
AC0055-0000042.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
from Box 17
[Radio Central, Rocky Point, Long Island multiple tuned antenna system, black & white photoprint.]
AC0055-0000025.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Twelve 400 feet (122 meters) towers support two independent antenna. The towers are spaced 1250 feet (380 meters) apart. Each tower has a cross-arm 150 feet (46 meters) in length.
Broadcasting
[Four men in station KDKA's radio room, black & white photoprint]
AC0055-0000009.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Air Concert "Picked Up" by Radio Here, [black & white photoprint]
AC0055-0000010.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Article appearing in The Horne Daily, printed by the Pittsburgh Sun
[Frank Conrad's garage, black & white photoprint.]
AC0055-0000030.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Laboratories and Factories
[Factory floor showing workers assembling radios, black-&-white photoprint]
AC0055-0000011.tif (AC Scan)
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Television
Jenkins Television
Jenkins Television
Also includes radio broadcasting to ships of stock prices.
88-628 (OIPP Neg. No.)
Silver gelatin on paper.
Unrestricted research use on site by appointment. Photographs must be handled with cotton gloves unless protected by sleeves.
Photographer unidentified.
Interview conducted by Geraldine Tyne Kemp.
Interview conducted by Gerald F.J. Tyne.
Includes: rectron, batteries, switches, loudspeakers, oscillators, transformers, telephone plugs, G.E. tubes, and aerotron detectors.
Includes: pliotrons, transmitters, vacuum tubes, rectrons, the Arlington Radio Station, and the Bush Terminal Station, Brooklyn.
Includes photographs.
Includes: photoradio machine, thermionic brake, scanner carrier frequency unit, radio telegraph at U.S. Navy Yard, notes of Julius Martin (electrical engineer), air condensers, wiring diagrams, U.S. Army Signal Corps, and Marconi Wireless Telegraph Co.
Relates to the transfer of the Clark Collection to the MIT Museum. Long curated the collection while it was at RCA from 1948-1949.
Includes: equipment, portraits, tube transmitters, U.S. Naval Radio Station, Arlington, Virginia, condensers, and Institute of Radio Engineers dinner.
Inlcudes: radio operators, equipment, short wave in England, receivers, and transmitting pliotrons.
Includes: radio operators, 100 kw transmitting tubes, and radiotrons.
Includes: Veterans Wireless Pperators Association (1939), antennas, receivers, wavemeter, and wireless presentation to the Chinsese (1905).
Includes; jenkins Radiomovie Broadcasting Station W3XK, Betty Godwin of NBC, George Clark, people sitting around a radio, Bell Telephone Laboratories, and equipment.
International Telegraph Construction Company, New york, Malay kite drawing