The research and historical documents series (1908-1924, 1970-1983) contains research for Kepper's thesis in Oneonta, New York, and in Las Vegas, Nevada. Also included are correspondence, notes, photographs, questionnaires, a thesis final draft, and transcripts of oral histories conducted for Kepper's thesis on the Fusileers.
The Southern Nevada Historical Society Photograph Collection on Basic Magnesium, Inc. contains photographs of the construction of Basic Magnesium Inc.'s plants and buildings from 1941 to 1942. The photographs primarily depict aerial views of the plant site and various buildings, including the administration building, tent camp, chlorination buildings, electrolysis facilities, electrical distribution systems, and warehouses. The photographs also depict Lake Mead and the early buildings in Henderson, Nevada.