The UNLV Public Lands Institute Records (approximately 1946-2017) primarily contain records from the University of Nevada, Las Vegas's Public Land Institute's (PLI) which is focused on providing knowledge and research expertise in the areas of environmental education and interpretation related to public lands management. The materials include records from the PLI's inaugural founder, Dr. Margaret N. "Peg" Rees, then the Associate Vice President for Research and Outreach at UNLV. Materials document the founding and work of the PLI and also include papers from Rex Bell, Jr. associated with the Walking Box Ranch which is co-owned by UNLV and the Bureau of Land Management. The collection also includes videos of Rex Bell, Jr. discussing donation of Walking Box Ranch materials to the PLI.

The Prencess Nelson Scrapbooks (approximately 1950-1979) consist of three scrapbooks documenting the career of Prencess Mayhall, a former showgirl and model. The scrapbooks contain photographs, newspaper clippings, magazine covers, and handwritten notes to Mayhall from various performers and models. Mayhall performed in a variety of shows in New York; Las Vegas, Nevada; and Los Angeles, California. She appears in photographs at a number of shows at the Thunderbird, Sands, and Frontier Hotels. Also included in the scrapbook is a 1954 American Guild of Variety Artists (AGVA) contract between Mayhall and Copacabana in New York, and photographs of Mayhall with entertainers including Red Skelton, Paul Anka, and Sammy Davis Jr. Prencess went by a number of names throughout her career, most commonly 'Prencess Mayhall' while in New York, and 'Lee Temple' while performing at the Sands Hotel.

The Thunderbird Hotel Records are comprised of material that documents the work of the Las Vegas, Nevada hotel's entertainment department from 1964 to 1973. The records consist of photographs, memorandum, newspaper clippings, and publicity materials.

The Alice Pearson Papers (1956-2000) contain the personal papers of Alice Pearson and the administrative records of the Mesquite Club, the first service organization founded in Las Vegas, Nevada. The collection includes the club’s administrative records, service projects and social events, as well as its membership in the General Federation of Women's Clubs (GFWC). Materials within the collection include meeting minutes, correspondence, committee reports, newsletters, notebooks, and scrapbooks.

The Human Radiation Experiments Records (1949-1995) contain reports from the National Environmental Policy Act (NEPA), the Advisory Committee on Human Radiation Experiments (ACHRE), and the U. S. Department of Energy (DOE). Also included are newspaper clippings, a court case brought by the National Association of Radiation Survivors (NARS), and cancer research papers. With the goal of building an atomic bomb using plutonium extracted from uranium, the material also examines the outcomes of radiation exposure done on humans during the late 1940s and early 1950s at the Oak Ridge Nuclear Facility in Tennessee.