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 George Petri Collection (approximately 1977-2010) contains food and beverage management manuals and employee instructional documentation from various resorts in Las Vegas, Nevada including Empress Casino, Harrah's Entertainment, Luxor, and Station Casinos. The materials were collected by George Petri, who was a Maître d'hôtel at the Regency Room restaurant at the Sands Hotel and Casino and also worked at other resorts in Las Vegas. Materials also include artifacts such as silver plated dinnerware from the Regency Room and various menus and memorabilia from the Sands Hotel over the years.

The Daly v Daly Collection documents materials produced for and as a result of the lawsuits between Suzanne Daly (formerly Tim Daly), a male-to-female transgender woman, and Nancy Toews Daly from 1980 to 2003. The collection primarily focuses on the motions filed with the Nevada District Courts and Nevada Supreme Court and transcripts of the divorce, the battle for parental rights, and an allegation of civil rights violations.

The Terry Ritter Collection, dating from approximately 1995-2012, contains six color prints of Ritter's artwork depicting Las Vegas, Nevada showgirls. There is also one convention flier advertising her artwork.

The Mint Hotel Photograph Collection consists of photographic prints and postcards from approximately 1960 to 1980. The collection includes photographs of the Mint’s “Behind the Scenes” tour during which guests experienced casino operations, and photographs and postcards of the hotel itself.