The Story of Classic Las Vegas Oral History Interviews (approximately 1950-2006) is comprised of raw and edited video recordings of oral history interviews used for The Story of Classic Las Vegas documentary which was produced, directed, and edited by Lynn Zook. The documentary offers first person historical overviews of what it was like to live in Las Vegas, Nevada from the 1920s to the 1970s. Individuals interviewed include a wide range of community members of the Las Vegas Valley including business owners, educators, entertainers, politicians, gaming professionals, casino workers, and activists. Materials also include a media kit with promotional materials and interview transcript for one of the interviewees, Betty Willis.

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.

The Six Companies, Inc. Hoover Dam Photograph Collection (1931-1935), consists of approximately 400 black-and-white photographic prints contained in two photograph albums and an additional twenty-one loose black-and-white photographic prints with ten corresponding photographic negatives.