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 C. D. Baker Photograph Collection depicts former Las Vegas, Nevada mayor Charles Duncan "C. D." Baker from 1916 to 1966. The photographs primarily depict Baker at political events, including campaign stops, fundraising events, meetings with officials and politicians, and at important locations in Las Vegas and Nevada. Baker was photographed with politicians such as U.S. Senator Chic Hecht, President Harry S. Truman, Governor Vail Pittman, and Lt. Governor Cliff Jones.

The J. T. McWilliams Photograph Collection contains photographs and postcards from Nevada and Southern California from approximately 1900 to 1970. The materials include postcards depicting Las Vegas, Nevada casinos such as El Rancho Vegas and the Golden Nugget Gambling Hall. The materials also include postcards depicting towns and scenes in Nevada such as Carson City, Rhyolite, Red Rock Canyon, and covered wagons traveling to Las Vegas. Lastly, the materials contain several photographs of the McWilliams family, possibly while they were living in what is now Las Vegas, Nevada.