NAA MS 2400
Includes reports, field notes, drawings, correspondence and other materials relating to mound explorations by Cyrus Thomas and collaborators, including F. S. Earle, J. W. Emmert, Gerard Fowke, Charles C. Jones, J. P. MacLean, J. D. Middleton, Warren K. Moorehead, P. W. Norris, Edward Palmer, H. L. Reynolds, J. P. Rogan. L. H. Thing.
Site reports and correspondence relating to specified localities are arranged by state. There are separate files of material relating to more than one state; correspondence of a general nature; and bibliographic references.
Alabama - Arkansas; Canada, Florida - Illinois; also California and Canada, Indiana - New York, New York - North Dakota (and South Dakota), Ohio, Oregon - Tennessee (South Dakota, see North Dakota) Virginia - Wisconsin, "Miscellaneous and General" (more than one state discussed) General Correspondence, 1882-1892, A - Z Bibliography; Newsclippings; Thomas, Personal Miscellanea.
Manuscript 2400, National Anthropological Archives, Smithsonian Institution
Much of the general administrative correspondence was transferred in 1960 from the Smithsonian Archives.
Cyrus Thomas, "Report on the Mound Explorations of the Bureau of Ethnology, BAE-AR 12, Washington, 1894 is based on these materials, but the printed report frequently contains important differences from the original notes, as well as being less detailed.