The C. C. (Clio Cline) Mobley Photograph Collection (approximately 1911 to 1917) consists of sixteen black-and-white photographic prints with corresponding photographic negatives. The images depict the Las Vegas, Nevada Ranch while the Mobley family leased it from the Union Pacific Railroad during the period. The photographs depict the home, swimming pool, the Old Las Vegas Mormon Fort, and orchards and streams on the property.

The Albert S. Henderson Photograph Collection (1860s-1959) primarily contains black-and-white photographic prints of Albert S. Henderson and his family. Also included in the collection are photographic prints of Henderson during his tenure as a Nevada legislator and district judge. Other materials include postcards, negatives, and a tintype.

The K. O. Knudson Photographs (approximately 1920-1969) depict the Las Vegas Grammar School and service, fraternal, and veterans organizations gathered by retired Las Vegas, Nevada school administrator and World War I veteran K. O. Knudson (also known as K. Oscar Knudson). The collection includes images of Knudson, Las Vegas Masonic Lodge members, American Legion members, and school dances. The photographs primarily feature Las Vegas, Nevada.

The Nevada Mining Photograph Collection depicts mining activities, miners, and mining towns in Nevada from 1868 to 1937. The photographs primarily depict the towns of Tonopah, Nevada and Goldfield, Nevada, including mills, buildings, mine shafts, and panoramic views of the landscape. The photographs also depict Beatty, Lost City, Delamar, Candelaria, Winnemucca, Virginia City, Rhyolite, Elko, and Reno, Nevada. The photographs also include portraits of early settlers in Nevada, Native Americans, children, parades, celebrations, and funerals.