Archives Center, National Museum of American History
Electricity and Modern Physics Photonegatives
National Museum of American History (U.S.). Division of Information, Technology and Society
NMAH.AC.0715
Archival Resource Key
6 Cubic feet
34 boxes
1890 - 1930
Photographic negatives and some glass plate negatives depicting subjects relating to the Division of Electricity and Modern Physics' artifact collections and research interests. Negatives include portrait photographs of engineers (Marconi, Tesla, Bell, and Zworykin), images of radios, telegraphy equipment, and phonographs.
Collection is in English. Some materials in French and Slovak.
Arrangement
The collection is arranged into one series and are arranged by topics. The folder titles in the container list were taken from the image enclosures.
Scope and Contents
Photographic negatives and some glass plate negatives depicting subjects relating to the Division of Electricity and Modern Physics' artifact collections. Negatives include portrait photographs of engineers (Marconi, Tesla, Bell, and Zworykin), images of radios, telegraphy equipment, radio equipment, inventors, and phonographs. The Radio Corporation of America (RCA) engineers and some equipment are especially well represented. Many of the negatives are unidentified and undated.
Conditions Governing Use
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.
Conditions Governing Access
Collection is open for research but 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.
Physical Characteristics and Technical Requirements
Gloves must be worn when handling unprotected photographs, negatives, and glass plates. The collection is in cold storage. Arrangements must be made with the Archives Center staff two weeks prior to a scheduled research visit.
Custodial History
Transferred to Archives Center from the Division of the History of Technology (now the Division of Work and Industry) in 2000.
Immediate Source of Acquisition
Source unknown. Found in collections.
Related Materials
Materials held in the Archives Center, National Museum of American History
George H. Clark Radioana Collection, circa 1880-1950 (AC0055)
Thomas Alva Edison Photo Prints, 1890s-1933, (AC0299)
Kenneth M. Swezey Papers, 1891-1982 (AC0047)
Preferred Citation
Electricity and Modern Physics Photonegatives, 1898-1953, undated, Archives Center, National Museum of American History.
Processing Information
Processed by Yauntilaa Lancaster, intern, Ramona Williamson, volunteer, Erin Molloy, volunteer; supervised by Vanessa Broussard Simmons, archivist, 2012. Finding aid written by Alison Oswald, archivist, 2012.
Black-and-white negatives
Radio -- Apparatus and supplies
Radio -- History
Engineers
Phonograph
Telegraph, Wireless
Marconi, Maria, Marchesa
Radio Corporation of America.
Edison, Thomas A. (Thomas Alva), 1847-1931
Marconi, Guglielmo, Marchese, 1874-1937
Bell, Alexander Graham, 1847-1922
Tesla, Nikola, 1856-1943
Farnsworth, Philo Taylor, b. 1906
Marconi Lighthouse Set
Archival Resource Key
1904
1
1
Reception in honor of H. E. Marconi at the Italian Pavilion
Archival Resource Key
1933 October 3
From Left to Right: Honorable G. Castruccio, Royal Italian Consul; Commander Luigi Ranieri, General Director, Italian Pavillion; H. E. Marconi; Marchesa Marconi; Mrs. G. Castruccio; Mrs. A. Ferme; Mrs. R. Lugianco; and Honorable A. Ferme, Italian Consul.
1
2
Branley Filings Coherer, Brown Microphone Receiver, Fessenden Moving Contact Receiver, Hot Wire Barretters, Liquid Barretter, Magnetic Receiver, Mechanical Receiver
Archival Resource Key
undated
2
1
Potentiometer, sending key, busy indicator, discharger, telephone call
Archival Resource Key
undated
2
2
RCA electrical equipment
Archival Resource Key
undated
2
3-4
Stone wireless set installed by G. H. Clark (sketch) on United States Revenue Cutter Manning at San Francisco
Archival Resource Key
1907
2
5
UV-1716
Archival Resource Key
undated
2
6
Heterodyne AC panel
Archival Resource Key
undated
2
7
Unidentified equipment
Archival Resource Key
undated
3
1-5
Unidentified equipment
Archival Resource Key
undated
4
1-5
Unidentified equipment
Archival Resource Key
undated
5
1-4
Unidentified equipment
Archival Resource Key
undated
6
1-6
Receiver, protective relay type SE-3522, serial number 197720
Archival Resource Key
undated
7
1
Radiola III
Archival Resource Key
undated
7
2
RCA Radiola 17
Archival Resource Key
undated
7
3
Radiola
Archival Resource Key
undated
7
4
Magazine
Archival Resource Key
undated
7
5
Radiola
Archival Resource Key
undated
7
6
RCA hall Photos
Archival Resource Key
undated
7
7
Unidentified electrical equipment in radio communication, RCA Hall
Archival Resource Key
undated
8
1-6
Receiver
Archival Resource Key
undated
9
1-2
Unidentified electrical devices
Archival Resource Key
undated
10
1-12
Unidentified electrical devices
Archival Resource Key
undated
11
1-14
Wireless telegraph
Archival Resource Key
undated
12
1
Wireless telegraph, chassis of Stromberg Carlson
Archival Resource Key
undated
12
2
Wireless telegraph, pamphlet
Archival Resource Key
undated
12
3
Wireless telegraph, RCA FM transmitter, type FM-1-B
Archival Resource Key
undated
12
4
Wireless telegraph
Archival Resource Key
undated
12
5
Unidentified equipment
Archival Resource Key
undated
13
1-4
RCA electrical equipment
Archival Resource Key
undated
13
5-8
United States Navy Yard, Machinery Division, New York
Archival Resource Key
undated
13
9
Federal Telephone Company
Archival Resource Key
1914 October
14
1
Radio shack for communication, WMS TAT planes
Archival Resource Key
1939
15
1
TAT and RR display suggestion for George H. Clark
Archival Resource Key
1939
15
2
Unidentified locations
Archival Resource Key
undated
16
1-6
Unidentified locations
Archival Resource Key
undated
17
1-6
Unidentified locations
Archival Resource Key
undated
18
1-5
Unidentified
Archival Resource Key
undated
19
1-12
Advertisement for the Massic Wireless Telegraph System
Archival Resource Key
undated
19
13
PEKAM
Archival Resource Key
undated
19
14
Wireless direction finder
Archival Resource Key
undated
19
15
Wireless telegraph
Archival Resource Key
undated
19
16
Unidentified women
Archival Resource Key
undated
20
1-4
Unidentified
Archival Resource Key
undated
21
1-2
Newsletter, Air concert "picked up" by Radio Herz
Archival Resource Key
undated
21
3
Received 1899 November 11, answered by [Guglielmo Marconi?]
Archival Resource Key
1899 November 11
21
4
Unidentified man
Archival Resource Key
undated
21
5
Unidentified
Archival Resource Key
undated
22
1-23
Unidentified males with RCA Victor-Marconi kite
Archival Resource Key
undated
23
1
Unidentified male group
Archival Resource Key
undated
23
2-3
Unidentified group
Archival Resource Key
undated
24
1-5
Unidentified group with dog
Archival Resource Key
undated
24
6
Unidentified men
Archival Resource Key
undated
25
1-6
Award to Admiral S. C. Hooper for meritorious radio service in the United States Navy
Archival Resource Key
1940 February 21
26
1
Pamatnica, Postavenia a Odhalenia Pomnika (Witnesses, and the status of a memorial)
Archival Resource Key
undated
26
2
Chronological "History-Service" chart of Navy radio
Archival Resource Key
undated
26
3
The Horne Daily News
Archival Resource Key
1920 September 29
26
4
Johnson, Eldridge. "Birthplace of the Victor"
Archival Resource Key
1898
26
5
Postcard to George H. Clark
Archival Resource Key
undated
27
1-2
Unidentified
Archival Resource Key
undated
27
3-10
Unidentified men
Archival Resource Key
undated
27
11-14
Unidentified
Archival Resource Key
undated
28
1-3
Veteran Wireless Operators Association
Archival Resource Key
undated
28
4
Telegraph
Archival Resource Key
undated
28
5
#9792 Radio Experiment, car 5230 with radio interiors and exteriors for Mr. Davis
Archival Resource Key
2 Nitrate negatives
1934 April 20
29
1-2
#9792 Radio Experiment, car 5230 with radio interiors and exteriors for Mr. Davis
#9792 Radio Experiment, car 5230 with radio interiors and exteriors for Mr. Davis
Archival Resource Key
2 Nitrate negatives
1934 April 20
30
1-2
#9792 Radio Experiment, car 5230 with radio interiors and exteriors for Mr. Davis
Drawings of electrical material used by the United States Navy Yard, Machinery Division, New York
Archival Resource Key
undated
31
1-19
General
Radio Telegraph Inductive Coupier and Wave Changing Switch, 2KW Type SE89, RY 34F 134
Bell, Alexander Graham
Archival Resource Key
undated
31
20
Brown, Thomas and Brown, Dorothy
Archival Resource Key
undated
31
21
de Forest, Lee
Archival Resource Key
undated
31
22
Edison, Thomas Alva
Archival Resource Key
undated
31
23
Gilbert, William
Archival Resource Key
undated
31
24
Loomis, Mahlon (Dr.), book dedication
Archival Resource Key
undated
31
25
Oersted, Hans Christian
Archival Resource Key
undated
31
26
Squier, George Owen (Major General), Chief Signal Officer of the United States Army
Archival Resource Key
undated
31
27
Stone, John, Chief Engineer, Stone Telegraph and Telephone Company, Boston, Massachusetts, 1901-1909
Archival Resource Key
1903
31
28
Thales
Archival Resource Key
undated
31
29
Thomas, E.
Archival Resource Key
undated
31
30
Volta, Alessandro
Archival Resource Key
undated
31
31
Small storage battery room, Belmar, RCA Engineering Department
Archival Resource Key
undated
31
32
Motor-generator room and place battery rack, Riverhead, New York
Archival Resource Key
undated
31
33
Radio receiver
Archival Resource Key
undated
31
34
Radio reception table, Belmar, New York. RCA Engineering Department
Archival Resource Key
undated
31
35
Duplex relay shelf, Belmar, New York. RCA Engineering Department
Archival Resource Key
undated
31
36
Line terminal cabinet, Riverhead, New York
Archival Resource Key
undated
31
37
Receiving engineer's desk, Riverhead, New York
Archival Resource Key
1922 January 6
31
38
Traffic room, Belmar, New York, RCA Engineering Department
Archival Resource Key
undated
31
39
Receiving sets on shelves, Belmar, New York, RCA Engineering Department
Archival Resource Key
undated
31
40
RCA notary
Archival Resource Key
undated
31
41
Landline distribution, Belmar, New York, RCA Engineering Department
Archival Resource Key
undated
31
42
Unidentified
Archival Resource Key
1903 April 11
31
43
Photographs of apparatus used in Professor R. A. Aessenden's system of wireless technology
Archival Resource Key
1903 May
31
44
Standard capacity, primary and secondary
Archival Resource Key
1903 April
31
45
Headphones
Archival Resource Key
undated
31
46
Variable capacity
Archival Resource Key
undated
31
47
RCA electrical equipment
Archival Resource Key
undated
31
48-74
Wireless telegraph, unidentified
Archival Resource Key
undated
32
161-170
Wireless telegraph, landline table, Belmar Engineering Department, RCA
Archival Resource Key
undated
31
75
Wireless telegraph, landline switchboard, Belmar Engineering Department, RCA
Archival Resource Key
undated
31
76
Wireless telegraph, made by H. O. Boehme, New York
Archival Resource Key
undated
31
77
Wireless telegraph, benkelberg
Archival Resource Key
undated
31
78
Wireless telegraph, operator sending a wireless message
Archival Resource Key
undated
31
79
Wireless telegraph, battery charging panel, Belmar Engineering Department, RCA
Archival Resource Key
undated
31
80
Wireless telegraph, receiving building and lead in Riverhead, Long Island, New York
Archival Resource Key
undated
31
81
Wireless telegraph, apparatus shelves, Long Island, New York
Archival Resource Key
undated
31
82
Wireless telegraph, apparatus shelves, Long Island, New York
Archival Resource Key
undated
31
83
Wireless telegraph, the "Marconi Man" and his instruments
Archival Resource Key
undated
31
84
Wireless telegraph
Archival Resource Key
undated
31
85
Wireless telegraph
Archival Resource Key
undated
31
86
Wireless telegraph, RCA ED14-154
Archival Resource Key
undated
31
87
Unidentified group
Archival Resource Key
undated
31
88
Unidentified group
Archival Resource Key
undated
31
89
Unidentified man
Archival Resource Key
undated
31
90
Unidentified man
Archival Resource Key
undated
31
91
Unidentified man
Archival Resource Key
undated
31
92
Unidentified man
Archival Resource Key
undated
31
93
Unidentified men
Archival Resource Key
undated
31
94
Unidentified group
Archival Resource Key
undated
31
95
Unidentified man and woman
Archival Resource Key
undated
31
96
Unidentified man and building
Archival Resource Key
undated
31
97
Unidentified man
Archival Resource Key
undated
31
98
Unidentified man
Archival Resource Key
undated
31
99
Unidentified man
Archival Resource Key
undated
31
100
Love Art Studio, Murray, Kentucky
Archival Resource Key
undated
31
101
"The Home of the Nathan Stubblefield Industrial School, and experiments in wireless telephony"
Archival Resource Key
1907 September 4
31
102
Unidentified
Archival Resource Key
undated
31
103-126
Picture and story in SRM85 056
Archival Resource Key
undated
31
127
Unidentified
Archival Resource Key
undated
31
128
Bailey, George William
Archival Resource Key
undated
32
1
Bullard, William H. G. (Captain), Greatest Radio System
Archival Resource Key
undated
32
2
Bullard, William H. G. (Captain), Greatest Radio System
Archival Resource Key
undated
32
3
Castner-Mselaney, Jones-Melnhortz, Gunner Proctor
Archival Resource Key
1918 January 2
32
4
Cohen, Louis
Archival Resource Key
undated
32
5
Costigan, A. J., Vice President
Archival Resource Key
undated
32
6
E. J. Cunningham, Incorporated, unidentified male group
Archival Resource Key
1926 February 1
32
7
De Forest, Lee (Dr.), Veteran Wireless Operators Association Honorary President
Archival Resource Key
undated
32
8
Dolbear, Nestor (Professor) of Wireless Telegraphy
Archival Resource Key
undated
32
9
Fitzpatrick, W. S.
Archival Resource Key
undated
32
10
Grimes, "Dady"
Archival Resource Key
1949 June 10
32
11
Hanson, O. B.
Archival Resource Key
undated
32
12
Haubner, T. D., Bachrach photo
Archival Resource Key
undated
32
13
Heising, Reginald A.
Archival Resource Key
undated
32
14
Johouston, Benjamin
Archival Resource Key
undated
32
15
Maher, J. F. J.
Archival Resource Key
undated
32
16
Marconi, H. E. and group at the scientific Italian section at the Hall of Science
Archival Resource Key
1933 October 3
32
17
McGonigle, William J., Secretary
Archival Resource Key
undated
32
18
Meinholtz, Fred
Archival Resource Key
1950 June 10
32
19
Muller, Fred, Marine Radio Support, Tropical Radio Telegraph Company
Archival Resource Key
undated
32
20
Mannill, C. J., vice president and general manager, Radiomarine Corporation of America
Archival Resource Key
undated
32
21
Parker, H. H., Secretary
Archival Resource Key
undated
32
22
Room (Dr.)
Archival Resource Key
undated
32
23
Schoemaker, Henry (Professor), "Who has made Wireless Telegraphy a practical success"
Archival Resource Key
undated
32
24
Simon, William C., Treasurer
Archival Resource Key
undated
32
25
Steele, Chisholm, Evans and dog, "Some of the Pioneers"
Archival Resource Key
1943 June 10
32
26
Trautwein, P. K., treasurer
Archival Resource Key
undated
32
27
Unidentified man, "Come doen Grindle before you get hurt"
Archival Resource Key
undated
32
28
RCA engineers, unidentified man
Archival Resource Key
undated
32
29
RCA engineers, unidentified men
Archival Resource Key
undated
32
30
Unidentified man
Archival Resource Key
undated
32
31
Unidentified male and female group
Archival Resource Key
undated
32
32
Unidentified men
Archival Resource Key
undated
32
33
Unidentified woman
Archival Resource Key
undated
32
34
Unidentified man
Archival Resource Key
undated
32
35
Unidentified men
Archival Resource Key
undated
32
36
Unidentified man
Archival Resource Key
undated
32
37
Unidentified men
Archival Resource Key
undated
32
38
Unidentified woman
Archival Resource Key
undated
32
39
Unidentified men
Archival Resource Key
undated
32
40
Unidentified men
Archival Resource Key
undated
32
41
Unidentified women and dog
Archival Resource Key
undated
32
42
Unidentified men and children
Archival Resource Key
undated
32
43
Unidentified man
Archival Resource Key
undated
32
44-48
Unidentified men and young girl, "NBC"
Archival Resource Key
undated
32
49
Unidentified men, "NBC"
Archival Resource Key
undated
32
50
Unidentified men
Archival Resource Key
undated
32
51
Unidentified men, "RCA COMMU"
Archival Resource Key
undated
32
52
Unidentified man and woman
Archival Resource Key
undated
32
53-54
Unidentified man
Archival Resource Key
undated
32
55
Unidentified group
Archival Resource Key
undated
32
56-57
Unidentified man
Archival Resource Key
undated
32
58-59
Unidentified group and unidentified man and woman
Archival Resource Key
undated
32
60
Unidentified man
Archival Resource Key
undated
32
61
Unidentified room with furniture, "Haussler"
Archival Resource Key
undated
32
62
Unidentified men
Archival Resource Key
undated
32
63
Unidentified sculpture of man
Archival Resource Key
undated
32
64
Unidentified men
Archival Resource Key
undated
32
65
Unidentified man and sculpture
Archival Resource Key
undated
32
66
Unidentified man
Archival Resource Key
1953 June 10
32
67
Unidentified man, "Underwood and Underwood, Washington, D.C."
Archival Resource Key
undated
32
68
Unidentified men
Archival Resource Key
undated
32
69-70
Unidentified houses
Archival Resource Key
undated
32
71
Unidentified man and women
Archival Resource Key
undated
32
72
Unidentified man
Archival Resource Key
undated
32
73-74
Unidentified group
Archival Resource Key
undated
32
75
Unidentified group, "NBC"
Archival Resource Key
undated
32
76
Unidentified group
Archival Resource Key
undated
32
77
Unidentified man and woman, "NBC," "Fredhess E. Son"
Archival Resource Key
undated
32
78
Unidentified man and woman
Archival Resource Key
undated
32
79
Unidentified group
Archival Resource Key
undated
32
80-82
Unidentified man
Archival Resource Key
1947 June 10
32
83
Unidentified man
Archival Resource Key
undated
32
84-85
Unidentified group, "NBC"
Archival Resource Key
undated
32
86
Unidentified man
Archival Resource Key
1948 June 10
32
87
Unidentified man
Archival Resource Key
undated
32
88
Unidentified group, "NBC/KYW"
Archival Resource Key
undated
32
89
Unidentified group
Archival Resource Key
undated
32
90
Unidentified group
Archival Resource Key
undated
32
91-92
Unidentified man
Archival Resource Key
undated
32
93-94
Unidentified group
Archival Resource Key
undated
32
95
Unidentified man
Archival Resource Key
undated
32
96-97
Unidentified group
Archival Resource Key
undated
32
98
Unidentified man
Archival Resource Key
undated
32
99-100
Unidentified boat
Archival Resource Key
undated
32
101
Unidentified man
Archival Resource Key
undated
32
102
Unidentified group
Archival Resource Key
undated
32
103
Unidentified man and woman
Archival Resource Key
undated
32
104
Unidentified man
Archival Resource Key
undated
32
105
Unidentified group
Archival Resource Key
undated
32
106
RCA. Unidentified
Archival Resource Key
undated
32
107-118
Negatives of slides of World Communication Paper (Wire, Cable, Radio). Unidentified
Archival Resource Key
undated
32
119-160
Radio receiver type A-1
Archival Resource Key
undated
32
171
Radio receiver type E
Archival Resource Key
undated
32
172
Sperry portable receiver type CS-107
Archival Resource Key
undated
32
173
Unidentified
Archival Resource Key
undated
32
174-176
A Promaire Synd all Secondaire
Archival Resource Key
undated
32
177
KSW quenched multiple spark radio transmitter
Archival Resource Key
undated
32
178
MTR 21, number 695422
Archival Resource Key
undated
32
179
Meter
Archival Resource Key
undated
32
180
LAB.C.NO14
Archival Resource Key
undated
32
181
Unidentified
Archival Resource Key
undated
32
182
Sperry Gyroscope Company
Archival Resource Key
undated
32
183
Unidentified
Archival Resource Key
undated
32
184-200
Mackay radio
Archival Resource Key
undated
32
201
Stopping condenser
Archival Resource Key
undated
32
202
Scotland
Archival Resource Key
undated
32
203-204
Meterodyne type BC-104 and stopping condenser
Archival Resource Key
undated
32
205
Ambrose
Archival Resource Key
undated
32
206
Receiving stations "YN," "I DO," "MC1'" and "POZ"
Archival Resource Key
1918 December 18
32
207
Award for David Sarnoff "for his outstanding contribution to the field of international communications"
Archival Resource Key
1935
32
208
"Yes sure is some snow and let me tell you one better the"
Archival Resource Key
undated
32
209
Unidentified
Archival Resource Key
undated
32
210-236
Stonset Express and stopping condenser
Archival Resource Key
undated
32
237
Unidentified
Archival Resource Key
undated
32
238-244
RCA electrical equipment
Archival Resource Key
undated
33
102-103
The Great Seal of Tuckerton
Archival Resource Key
1914 October 9
33
104
Voices over space
Archival Resource Key
undated
33
105
Silver Snake Studio
Archival Resource Key
undated
33
106
Recreation room, Navy barracks, male group
Archival Resource Key
undated
33
107
Leviathan, New York
Archival Resource Key
undated
33
108
Man and woman, beach view, Cape Cod, Massachusetts
Archival Resource Key
undated
33
110
Marconi Wireless Station, South Wellfleet, Cape Cod, Massachusetts
Archival Resource Key
undated
33
111
Machrihanish
Archival Resource Key
1906 November 10
33
112
"African Golf." The most popular pastime at Belmar, New York
Archival Resource Key
undated
33
113
The Tabbri Cottage, Bar Harbor, Maine. Burned early in 1918
Archival Resource Key
undated
33
114
Wax cylinders by C. S. Jarnter
Archival Resource Key
undated
33
115
Peace Haven Hotel, Brant Rock, Massachusetts
Archival Resource Key
undated
33
116
Machrihanish Light Railway
Archival Resource Key
undated
33
117
Mack Sennett comedies
Archival Resource Key
undated
33
118
Unidentified
Archival Resource Key
undated
33
119-145
Wireless road to the ocean
Archival Resource Key
undated
33
109
Alesanderson, Ernst F. W.
Archival Resource Key
undated
33
1
Armstrong, Edwin H, inventor of the regenerative and super-regenerative circuits
Archival Resource Key
undated
33
2
Armstrong, Edwin H., inventor of the regenerative and super-regenerative circuits
Archival Resource Key
undated
33
3
Bell, Alexander Graham, inventor of the telephone
Archival Resource Key
undated
33
4
Berlin, B. M.
Archival Resource Key
undated
33
5
Bouthillion, L.
Archival Resource Key
undated
33
6
Dolbear, Nestor (Professor) of wireless telegraphy
Archival Resource Key
undated
33
7
Dubillier, William
Archival Resource Key
undated
33
8
Farnsworth, Philo T., (inventor of the Farnsworth system of television)
Archival Resource Key
undated
33
9
Goldsmith, Alfred N. (Dr.) eminent electrical engineer, aided industrial development of RCA
Archival Resource Key
undated
33
10
Harris and Ewing
Archival Resource Key
undated
33
11-14
Hogan, John L. V.
Archival Resource Key
1926
33
15
Jackson, Henry Bradwardine (Admiral Sir), Knight Grand Cross of the Order of the Bath, Knight Commander of the Royal Victorian Order, Fellows of the Royal Society
Archival Resource Key
undated
33
16
Hyatt
Archival Resource Key
undated
33
17
Latour, Marius C. A. Professor and French radio physicist
Archival Resource Key
undated
33
18-19
Langmoir, Irving
Archival Resource Key
undated
33
20
Logwood, Charles V.
Archival Resource Key
undated
33
21
Marconi, Guglielmo
Archival Resource Key
undated
33
22
Marconi, Guglielmo (Chicago)
Archival Resource Key
1933 October
33
23
Marconi, Guglielmo, Marchesa Cristina [Maria Cristina Bezzi-Scali], and [Maria] Elettra Julla [Elena Anna]
Archival Resource Key
undated
33
24
Marconi, Guglielmo
Archival Resource Key
undated
33
25-27
Meinholtz, Steele, Grimes, McLaney, and Castner
Archival Resource Key
undated
33
28
Murray
Archival Resource Key
undated
33
29
Pierce, G. W.
Archival Resource Key
undated
33
30
Poulsen, Valdemar(Radio News)
Archival Resource Key
1922 January
33
31
Steinmetz, C. P. G. E.
Archival Resource Key
1912 June
33
32
Tesla, Nikola
Archival Resource Key
undated
33
33
Thomson, Joseph (Sir). Discoverer of the electron
Archival Resource Key
undated
33
34
Thomson, E.
Archival Resource Key
undated
33
35
Usselman, G. L., Mr. and Mrs.
Archival Resource Key
1943
33
36
Usselman, G. L.
Archival Resource Key
undated
33
37
Walker, James L.
Archival Resource Key
1925
33
38
Weagant, Roy A., chief engineer, Marconi's Wireless Telegraph Company of America
Archival Resource Key
undated
33
39-40
Weagant, Roy A. Chief engineer, Marconi's Wireless Telegraph Company of America
Archival Resource Key
1919 January
33
41
Whitney, W. R. (Dr.)
Archival Resource Key
undated
33
42
Zworykin, Vlandimir (inventor of the iconoscope and other television devices)
Archival Resource Key
undated
33
43
Major of C.I.S., J.J.
Archival Resource Key
undated
33
44
Instimi Royal de France
Archival Resource Key
undated
33
45
SAM 87221
Archival Resource Key
undated
33
46
Gladis Giad
Archival Resource Key
undated
33
47
Unidentified man
Archival Resource Key
undated
33
48-56
Unidentified
Archival Resource Key
undated
33
57
Unidentified man
Archival Resource Key
undated
33
58-84
Unidentified man and woman
Archival Resource Key
undated
33
85
Unidentified man
Archival Resource Key
undated
33
86-88
Unidentified group
Archival Resource Key
undated
33
89
Unidentified man
Archival Resource Key
undated
33
90-101
Unidentified
Archival Resource Key
undated
33
146
Unidentified
Archival Resource Key
undated
34
1-4
Mica condenser bank
Archival Resource Key
undated
34
5
Telephone Department, Electrical Division
Archival Resource Key
1927 April 7
34
6
Unidentified
Archival Resource Key
undated
34
7-13
Interior substation [?] switch boards
Archival Resource Key
undated
34
14
Unidentified
Archival Resource Key
undated
34
15-21