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 Claudine Williams Papers (1956-2009) contain awards, contracts, personal and business correspondence, newspaper clippings, and photographs pertaining to Las Vegas, Nevada businesswoman and philanthropist, Claudine Williams. The collection also includes extensive information on her hotel and gaming properties, including the Silver Slipper Gambling Hall, Holiday Casino, and Harrah's Hotel and Casino, as well as her honorary doctoral degree, medals, and audiovisual materials of interviews, news reports, and events.

The Squires Family Photographs document the Squires Family and the development of the Las Vegas Valley in Nevada from approximately 1860 to 1980, with a bulk of the photographs depicting people and events from 1900 to 1950. The photographs depict the Euro-American settlement and growth of Las Vegas, Nevada; traveling and exploration of Southern Nevada and the Southwestern United States; the Hoover (Boulder) Dam and the Colorado River; clubs and social groups; and the Squires Family, especially prominent newspaper editor and publisher Charles Pember (C. P. or “Pop”) Squires, Delphine “Mom” Anderson Squires, and their children.

The Southern Nevada Chapter of the American War Mothers Organization Records (1947-1995) are comprised primarily of scrapbooks containing correspondence and minutes, numerous newspaper clippings, and photographs. Also included are pamphlets on American War Mothers organizational rituals, bylaws, history, ceremonial ephemera, flags, and a Henderson Chapter Charter. The materials also contain items relating to the North Las Vegas Chapter, the Rose Garden Chapter, and the State Chapter.

The Southern Nevada Gem and Mineral Society Records (1950-2024) contain the records of the Clark County Gem Collectors, Las Vegas Gem Collectors, and the current Southern Nevada Gem and Mineral Society. The collection contains articles of incorporation, by-laws, membership directories, meeting minutes, correspondence, financial records, show paperwork, and award certificates. Also included are photographs of the organizations since the 1970s and digital scans of Gem Times and The Polished Slab newsletters.

The Carolyn V. Hamilton Papers (1966-2024) consist of advertisements, press releases, correspondence, newspaper articles, awards, and event programs. The materials primarily document Hamilton’s work as a graphic designer and advertising executive in Las Vegas, Nevada from the early 1980s into the 2000s. Some of the materials in this collection pertain to the late comedian Cork Proctor, Hamilton’s former spouse, including performance advertisements and magazine articles.