The Thomas Clark Professional Papers (1950-1998) contain materials from his tenure as a Professor of English at the University of Nevada, Las Vegas (UNLV), which are divided into two series. The gaming research series includes newspaper clippings, correspondence, brochures, bulletins and articles. Also included are book chapters, a glossary of terms used in the casino industry, and gambling guides. In the linguistics and teaching series there are research files, articles, speeches, correspondence, interviews, multimedia, workshops, and conference materials. Also included are files on graffiti, symbolism, ethnic and regional speech differences, language usage, and National Council of Teachers of English (NCTE) material. Additional materials include colleague publications and cassette tapes of interviews from students in courses Clark taught at UNLV.

The Margo Mansergh Papers (approximately 1920-2010) document the life of former showgirl and dancer Margaret "Margo" Mansergh Tomaszewski. Materials include photographs of Margo modeling, backstage at various shows, portraits, and personal family photographs as well as programs from her international career performing in the Lido de Paris and Pigalle Nightclub in London, as well as a number of shows in Las Vegas, Nevada, such as Vive Les Girls, Casino de Paris, Minsky's Burlesque, and Lido de Paris at the Stardust. The collection contains materials from Mansergh's modeling career, including photographs, book covers, and images of her as an extra in films. Digital images from the closing Stardust performance and an event for Miss Bluebell are also found in the collection.

The Toni and Wilbur Clark Photographs depict Las Vegas, Nevada casino owner and land developer Wilbur Clark and his wife Toni from 1910 to 1975. The photographs primarily document Wilbur and Toni Clark at the Desert Inn, the hotel and casino Wilbur co-owned. The photographs also depict him with politicians and entertainers, and Wilbur and Toni Clark’s house in Las Vegas.

The Nevada Consolidated Copper Company Records (approximately 1907-1978) contain the business records of the company, including correspondence, freight bills, ledgers, maps, leaching data, and books relating to mining. The majority of the records post-date the company's name change to Kennecott Mining Company.

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.