The Edythe and Lloyd Katz papers (1934-2002) provide a glimpse of the social, religious, and educational contributions they made to the community of Las Vegas, Nevada. Materials include photographs, correspondence, newspaper clippings, and awards dating from 1934 to 2002.

The Union Pacific Railroad Collection (1828-1986) is comprised of the original corporate records of the Union Pacific Railroad's operations in Southern Nevada, Utah, and Southern California, particularly focusing on Las Vegas and Los Angeles. The collection documents the purchase of Stewart ranch and the construction of the original depot and town which became modern Las Vegas. The collection also contains the records of the Las Vegas Land & Water Company (LVL&W), a subsidiary of the railroad formed in 1905 to handle the railroad's land transactions. The collection contains office files, correspondence, reports, leases, various legal, governmental and financial document, the collection contains large and small format maps, architectural and engineering drawings, published technical reports, railroad operational manuals, bound legal briefs, ledgers, and payroll and receipt books. The collection also includes the personal files of Walter Bracken, the Union Pacific's special representative in Nevada and vice president of the Las Vegas Land and Water Company, and a paper index of the collection materials.

The Ralph Denton Legal Papers (1950-1993) consist of case files and legal briefs of civil rights attorney Ralph Denton. The cases largely involve civil rights issues and property claims in Las Vegas, Nevada. The files include cases representing individuals as well as companies such as Henderson Telephone Company, Lephrechaun Mining Company, and the Jockey Club Casino.

The Rick L. May Papers document social and political activities of Las Vegas, Nevada's lesbian, gay, bisexual, and transgender (LGBT) community from 1982 to 1997. The papers include records from the Gay Academic Union of the University of Nevada, Las Vegas; various gay pride celebrations in Los Angeles, California and Las Vegas; the Metropolitan Community Church's outreach to the LGBT community; as well as Rick L. May's own notes and collections about LGBT-supportive stores like R and R Assordid Sundries. The collection also includes several t-shirts that commemorate the pride celebrations. The papers demonstrate how the pride celebrations that began in 1984 were the result of efforts from several sectors of Las Vegas' LGBT community.

The Eddie Anderson Papers date from 1965 to 2000. The collection contains material from Eddie Anderson’s work as a political and social activist, as well as his radio career in Reno, Nevada. Included are newspaper articles, research notes, correspondence, speeches on political activism and gay rights, video recordings, audio recordings, memorabilia, black-and-white photographs, and color photographs. There is a photograph of Eddie Anderson with President Richard Nixon from 1969.

The Ronnow Family Photographs contain four black-and-white photographic prints of the Ronnow family in Southern Nevada from approximately 1870 to 1950. Also included is one large oversized black-and-white photographic print of the Old Rotary Club with C. C. Ronnow present.

The Edythe and Lloyd Katz Photographs (1947-1986) contain photographs of the businesses operated by Las Vegas, Nevada entrepreneurs Edythe and Lloyd Katz. The photographs primarily depict the movie theaters purchased by the Katz Family, including the Guild Theatre (formerly the Palace Theatre) and the Fremont Theatre. The photographs also depict the Katz Family and the Helldorado Days parade.