The H. E. and Ruth Hazard Political Papers (1937-1977) consist of papers and memorabilia related to Nevada and national Democratic politics. It includes materials about the Nevada legislature; clippings and information about the Nevada Tax Commission; political memorabilia including invitations and programs related to the presidential inaugurations of Lyndon Johnson and Jimmy Carter; documents about the purchase of Basic Magnesium Inc. by the state of Nevada; and newspaper clippings.

The Syphus-Bunker Papers date from 1891 to 1994, with the majority of the collection consisting of correspondence between Mary Etta Syphus and John Mathieson Bunker from 1891 to 1895. The collection also contains correspondence from friends and relatives, and documentation related to Mary Etta Syphus' attendance at Brigham Young Academy Church Normal Training School. Other materials include family history information and two color photographs of family homes. The collection also includes typed transcripts of the correspondence.

The James H. Down Jr. Photograph Collection (approximately 1915-1940) consists of black-and-white photographic prints and negatives, as well as color photographic slides and postcards. The images depict scenes in and around Las Vegas and Goodsprings, Nevada. Also included are Glenn Davis' photographs of the Hoover Dam (Boulder Dam), Black Canyon, the Colorado River, and Lake Mead. Most of the images portray the construction phases of the Hoover Dam.

The Elmo and Charlotte Ellsworth Photograph Collection (approximately 1940-1959) is comprised of black-and-white photographic prints and negatives. The images depict Charlotte and Elmo Ellsworth. Also included is an image of Elmo Ellsworth on horseback at the Las Vegas, Nevada airport for the arrival of the first United Airlines flight and an image of people at the Last Frontier Village in Las Vegas.

The Junior League of Las Vegas Photograph Collection contains photographic prints and negatives, as well as postcards of locations in and around Las Vegas, Nevada between approximately 1900 and 1980. Early photographs in the collection offer views of the Las Vegas townsite, buildings, railroads, the Las Vegas High School, Overland Hotel, Arizona Club, and residential areas. Other photographs during this time depict the Hoover Dam (Boulder Dam) construction and Death Valley, California. Later photographs show the University of Nevada, Las Vegas (UNLV) campus, downtown Las Vegas, and the Las Vegas Strip.

The Edith Giles Barcus Family Photograph Collection (approximately 1878-1954) consists of black-and-white photographic prints and negatives, as well as postcards and photograph albums. The images depict locations in Nevada including Las Vegas, Goldfield, Searchlight, and Tonopah, in addition to locations in Arizona, California, Colorado, Massachusetts, Utah, and Mexico. Also included are images of family, friends, and associates of the Giles Barcus family. The albums contain photographs depicting the Giles family as they traveled through the southwest United States and Mexico, as well as postcards from prominent locations in the southwestern United States.

The John D. Dombrink Gaming Research Files (approximately 1951-1990) contain the research files of John D. Dombrink in preparation for his book The Last Resort: Success and Failure in Campaigns for Casinos, published in 1991. The collection consists of newspaper clippings, journal articles, and public reports on a variety of topics and issues related to gaming in the United States, including organized crime, commercial gaming, and regulatory practices and issues. The collection also contains manuscript drafts for The Last Resort: Success and Failure in Campaigns for Casinos with handwritten revisions and comments by Dombrink, as well as correspondence about the book’s potential publication and promotion.