The Lorelle Nelson Collection on Atomic Testing is comprised of newspaper clippings, magazine and journal articles, correspondence, press releases, fact sheets, fliers, informational handouts and booklets, and newsletters from approximately 1980 to 2009 concerning nuclear weapons testing at the Nevada Test Site, throughout the United States, and internationally. The collection includes information about anti-nuclear groups, committees, and associations, as well as information on the effects of radiation, nuclear fallout, lawsuits and court cases, events and protests, conferences, and local news coverage.

The Hotel Last Frontier Photograph Collection contains photographic prints, negatives, and slides depicting scenes inside and outside the Hotel Last Frontier in Las Vegas, Nevada between approximately 1940 and 1969. The collection also includes photographs under its alternate names: the Last Frontier and the New Frontier Hotel and Casino.

The J. T. McWilliams Photograph Collection contains photographs and postcards from Nevada and Southern California from approximately 1900 to 1970. The materials include postcards depicting Las Vegas, Nevada casinos such as El Rancho Vegas and the Golden Nugget Gambling Hall. The materials also include postcards depicting towns and scenes in Nevada such as Carson City, Rhyolite, Red Rock Canyon, and covered wagons traveling to Las Vegas. Lastly, the materials contain several photographs of the McWilliams family, possibly while they were living in what is now Las Vegas, Nevada.

The Emily Higby Powell Photograph Album (approximately 1910-1920) contains black-and-white photographs taken by Emily Higby Powell on a trip from New York to the west coast. The images depict desert landscape throughout the Southwest, including Northern Nevada, as well as images taken on Lake Champlain in Essex, New York.

The Peggy Hyde Phillips Papers (1929-1998) document the lives of Peggy Hyde Phillips, her first husband Charles, and her son Michael. Materials include family photographs, correspondence, newspaper clippings, and documents from Michael Hyde’s time as a student at the United States Air Force Academy. The collection also includes a near-complete run of issues from February 1, 1963 through May 8, 1964 of the Paradise Press weekly newspaper from Paradise, an unincorporated township in Clark County, Nevada.

Citizen Alert is a Nevada-based environmental organization established in 1975 in response to Yucca Mountain being considered as the repository for the nation's nuclear waste. The records in the collection date from 1971-1999, with the bulk of the records from 1988-1996 and focused on issues of concern to Southern Nevada. The collection includes a large subject and administration file containing the organization’s mailings, fliers and newsletters regarding environmental issues and events, newsletters of other environmental organizations, press releases and brochures from a number of government agencies, and newspaper clippings on specific environmental topics. The collection also contains a number of environmental reports from federal, state, and local agencies as well as a number of conference and activist packets.

The Johnnie Ray Music Scores contain hand-written musical scores from the musician Johnnie Ray that were created between 1958 and 1991. Johnnie Ray was a singer, songwriter, and pianist. He was most notable for the songs "Cry" and "The Little White Cloud That Cried."