The Ernest Mitchell Pratt Photographs (approximately 1932-1936) consist of black-and-white photographic prints, signed and unsigned, taken by Pratt while Hoover Dam was under construction. Many prints are signed and mounted, and two are noted as award-winning photographs shown at the Annual International Salon of Camera Pictorialists in Los Angeles, California. There are additional working prints included alongside the final prints for most of the scenes. Also included in the collection is one small photograph of Pratt. This collection was formerly known as the Price Photograph Collection.

The Paul May Photograph Collection (1969) consists of black-and-white and color photographic prints. The images primarily depict Nevada Assemblyman Paul May alongside Nevadan senators and congressmen, including Senator Paul Laxalt. Other images are portraits of May.

The Geneva Stark Merwin Photograph Collection features photographic prints and negatives of locations throughout Pahrump, Nevada between 1941 and 1942. Primary locations include a Pahrump school and Pahrump Ranch, as well as locations in local fields and mountains. The photographs capture candid scenes of people walking to school and feeding animals.

The Nevada Statehood Commemorative U.S. Postage Stamps and Coin collection contains one sheet of the 1964 Nevada Statehood Centennial Stamp, printed from plate number 27798, and one proof copy of the 1964 Nevada Centennial Medallion.

The Lorenzo Romans Papers (1875-1965) are comprised of photographs, newspaper clippings, a family photograph album, a diary, a diploma, and related ephemera. The materials were owned by Lorenzo Romans, a California real estate developer who moved to Las Vegas late in life after a short visit to Helen Stewart's Las Vegas Rancho in 1894.