The Robert B. Griffith Collection (1928-1975) documents the work of Robert B. Griffith, an instrumental figure in the development of water resources in Las Vegas, Nevada, as well as the creation of McCarran International Airport and Nellis Air Force Base. The collection consists of Colorado River Commission papers, 1928 International Air Race documents, general correspondence, a feasibility study, an airport guide, American Legion papers, the memoirs of Alfred Merritt Smith, and death and burial records belonging to his father. The collection also includes slides from various countries, including the United States, Canada, Europe, Asia, and the Middle East.

The Sandstone Ranch Collection is comprised of bank statements, letters, correspondence, and photographs relating to the Wilson family from 1907 to 1941. The collection includes information about the financial aspect of the Wilson Ranch, later renamed the Sandstone Ranch, located outside of Las Vegas, Nevada. The collection also includes information about the personal lives of those working on the including contracts about grazing cattle, selling cattle, and appropriation of water.

The William Barak Collection (approximately 1962-1989) contains photographs of Barak and colleagues while working E.G. & G. at the Nevada Test Site and in Alaska from the NERVA (Nuclear Rocket) Division and the last two tests in Amchitka (Milrow and Cannikin). The collection also contains numerous government publications, manuals, and maps relating to Barak's work.