The Charles Aplin Photograph Collection (approximately 1935-1955) consists of black-and-white photographic prints and negatives. The images primarily depict the Fraternal Order of Eagles, Las Vegas, Nevada chapter events and members. Also included are images of Las Vegas, Helldorado parades, and Conrad H. Mann, former president of the Fraternal Order of Eagles.

The Norman Kaye Photograph Collection (approximately 1950-1970) consists of black-and-white photographic prints of Norman Kaye and the Mary Kaye Trio in performance at the Hotel Last Frontier in Las Vegas, Nevada.

The Frank F. Watts Photograph Collection (approximately 1940-1959) contains black-and-white photographic prints, negatives, and slides. The photographs were taken in and around the El Rancho Vegas Hotel and Casino in Las Vegas, Nevada and include publicity photographs, celebrity images, wedding photographs, and images of the hotel interior and exterior. Also included are images of the El Rancho's executives with national figures, including Eleanor Roosevelt and Walter Winchell. A few additional images depict the Hoover Dam (Boulder Dam) and Lake Mead.

The Frank F. Watts Collection of Casino Memorabilia (1880-1990) consists of gaming tokens and chips, matchbooks, and other memorabilia from Nevada and international casinos. The collection also contains items related to early Northern Nevada history including a salt ledger from 1880 as well as a wanted poster from 1913.

The Gue Gim Wah Papers (approximately 1940-1985) consist primarily of incoming correspondence (largely written in Chinese) to Gue Gim Wah at the Prince Mine in Pioche, Nevada. Also included are Wah's naturalization certificate, a map of the Prince Mine Bunkhouse, brochure of the Lincoln County Civic Association, and a small amount of photographs including a black-and-white photograph of Gue Gim circa 1940s.

The Sidney R. Whitmore Collection (approximately 1885-1970) contains land deeds and other documents about Mount Diablo, Nevada; documents detailing parts of his family history; and eight framed paintings of landscapes and portraits.

The Hughes Electronics Corporation Records (1935-2021) contain the files and publications of the corporate communications department and records donated by Robert K. Roney, a leading engineer at Hughes. These records document the growth of the company in Southern California, from building experimental aircraft for Howard Hughes, to developing and manufacturing radar and guided missile systems for the United States military and NATO forces, to developing and manufacturing communication satellites and space probes for NASA, and becoming the largest manufacturer of communication satellites and provider of satellite TV. The collection contains press releases, executive biographies, executive speeches, annual reports, corporate directories, organizational charts, correspondence files, technical reports and notes, promotional materials, as well as articles and publications detailing the history of the company. The collection also includes audiovisual materials and photographs. The audiovisual series details the history of the company through news footage and documentaries about Howard Hughes, aviation, corporate mergers, interviews with executives and promotional videos.