The John Ponticello Papers are comprised of materials related to Ponticello's experiences in Las Vegas, Nevada between 1956 and 1971 with an emphasis on his Research Gambling Game Project, which he conducted and published between 1968 and 1971. The collection includes materials regarding gaming licenses and applications, research agreements, descriptions of the project, and publications about the research project. Also included are materials from Ponticello's experiences in Las Vegas such as business cards, county work cards, and souvenir photographs.

Ann Brewington Papers (1984-1987) consist of letters and clippings related to Nevada history. Correspondence is primarily from Anne Brewington's sister, Ida Brewington, to Brewington regarding Ida Pittman's death. This collection also contains a letter from Florence Cahlan and copies of letters sent to Cahlan about an article she had written on Ida Brewington Pittman. Also included is another article about Pittman that appeared in the December 2, 1984 Nevadan that has a few hand written notes in the margins, as do a few of the letters.

The John Janney Photograph Collection on Pioche, Nevada contains photographs of mining operations and townspeople in Pioche, Nevada from 1908 to 1934. The photographs are primarily panoramic views of the town, mines, and landscape around Pioche, where Janney was president of Pioche Mines Consolidated until his death in 1967. The photographs also depict the baseball field in Pioche, a train crossing the desert in Lincoln County, and the Lee Family.

The Hank Harrison Photograph Collection on Helldorado Days contains two black-and-white photographs of the Helldorado Days festival in Las Vegas, Nevada from approximately 1940 to 1977. The first photograph depicts a rodeo clown distracting a bull; the second photograph is of Ned Romero, an actor in Helldorado.

The Roger D. Foley Papers on United States v. Cappaert are comprised of materials collected by District Judge Roger D. Foley while performing his duties as judge in United States v. Francis Leo Cappaert, et al. from 1972 to 1976. The collection includes transcripts of the case, exhibits, and copies of motions filed with the Court in regards to this case, which centered on the protection of the Devils Hole pupfish in Nevada.

The Irma McGonagill Photograph Collection (1870-1925) consists of thirty black-and-white photographic prints, ten postcards, and fourteen photographic negatives showing Irma McGonagill and her family in Tonopah, Nevada during the mining boom. The images depict the town of Tonopah, mines around the Tonopah area, homes in Tonopah, and the McGonagill family.