The Don T. Walker Photograph Collection (1900-1995) is comprised of black-and-white and color photographs taken by or belonging to Las Vegas photographer and Nevada historian Don Travis Walker. The photographs taken by Walker include ghost towns in Nevada, Arizona, and California, as well as a series on Phil Benson, editor and publisher of the Southern Nevada Times. Other items in the collection include photographs taken by other people related to the Moulin Rouge Hotel in Las Vegas, various photographs of historic sites in Nevada, and a program from the Nevada State Museum and Historical Society for its "Moulin Rouge: History in the Making" exhibition.

The Ann Valder Photograph Collection on Judy Bayley (1969-1971) consists of black-and-white photographic prints of Hacienda Hotel owner Judy Bayley, collected by Las Vegas, Nevada journalist Ann Valder. The collection is primarily comprised of photographic prints of Bayley at a 1971 event held in her honor at the International Hotel in Las Vegas, Nevada. The collection also includes photographic prints of Bayley at fundraisers for the American Cancer Society. Ann Valder was an editor and journalist for the Las Vegas Review-Journal and Valley Times, as well as a columnist for the Las Vegas Sun.

The David Donovan Collection on Hydrology and Geology (1911-2011) is comprised of the research collected by former Las Vegas Valley Water District employee, David Donovan, about groundwater, hydrology, minerals, and geology in Nevada, as well as the surrounding areas of California, Arizona, and Utah. Included are reports, professional papers, maps, and books.