The Las Vegas Ambassadors Collection (1968-1985) primarily consists of a scrapbook, newspaper articles, and photographs documenting the activities of the Las Vegas Ambassadors youth singing group. The materials were compiled by Harry LaFavor, the Ambassadors' business manager, who co-founded the group with Norman Kaye and Richie Astone to promote a positive image of Las Vegas. The collection also includes a songbook, vinyl record and ¼” tape recording, and promotional materials.

The William Flangas Srapbooks document his anti-smoking efforts in Nevada from 1974 to 2014. These materials include correspondence, articles, copies of assembly bills, newsletters related to smoking and health, and newsletters related to non-smokers.

The Donna Andress Papers (1890-2021) contain the personal papers of Donna Andress, a longtime resident and activist in Southern Nevada. Materials include correspondence and newspaper clippings from the Nevada Welfare Committee, on which Andress served as chairperson during the 1970s, in addition to pamphlets and newsletters from various Nevada historical organizations and committees. The papers reflect her involvement with community organizations throughout Southern Nevada.

The Kenneth Giles Professional Papers (1964-2001) contain documents and visual material related to Giles's time as an Environmental Radiation Monitor for the Environmental Protection Agency (EPA) at the Nevada Test Site (NTS). Photographic slides, film, and digital images depict the general flora and fauna throughout the area surrounding the NTS. Visual materials also document specific mule deer and steer surveillance and testing at the EPA Farm located within the NTS. The collection also contains environmental reports written or collected by Giles, government documents, pamphlets, and newspaper clippings related to environmental monitoring and Giles's work at NTS. A small portion of the collection documents his brief role providing monitoring support at Three Mile Island in Pennsylvania in 1979. Note: Some images may be of a graphic or disturbing nature and may not be suitable for some users. Photographs may contain scenes of animal testing or other objectionable imagery.

The Scott Henry Photographs of the Las Vegas, Latinx Community (approximately 1983-2000) consist of 42 photographic prints depicting members of the Latinx community in Las Vegas, Nevada. Thirty-eight of the prints were used as part of a collaborative project between Scott Henry, photographer and editor for the Las Vegas Review-Journal, and Thomas Rodriguez, a prominent member of the Latinx community in Las Vegas, for an exhibit of the Las Vegas Latinx community. Henry and Rodriguez together planned who to photograph for the exhibit. The photographs demonstrate the impact that the Latinx community has on the region's political, economic, and social growth and development. A number of the photographs show early members of the League of United Latin American Citizens (LULAC), including John Mendoza, Delia Martinez, Tom Rodriguez, Bob Agonia, Corrine Gutierrez, Nick Flores, Grace Salazar, and Gus Ramos.

The Marjorie Barrick Museum of Natural History Records (1939-2003) detail the creation of the Marjorie Barrick Museum of Natural History in Las Vegas, Nevada founded by Richard H. Brooks, a professor of anthropology at the University of Nevada, Las Vegas. The records are comprised primarily of correspondence between Brooks and members of the Southwestern Anthropological Association (SWAA), the Society for California Archaeology (SCA), and the meetings and exhibitions of the Nevada State Museum. The collection also contains financial statements that describe expenses for supplies, research, and excursions. Also included are anthropological, archaeological, and historical publications, as well as administrative files and Richard Brooks' correspondence with the Nevada Archaeological Survey (NAS). The collection also includes architectural floor plans for the Classroom and Physical Education, the original space that was converted into the museum in 1980, and plans for the redesign of the Barrick Museum and the Harry Reid Environmental Research Center addition.

The Lake-Eglington Family Photograph Collection contains photographs of the Lake-Eglington Family in and around Las Vegas, Nevada from 1900 to 1976. The materials include photographs of early Las Vegas resident Olive Lake-Eglington and her family shortly after they moved to Las Vegas in 1904, as well as her eventual husband Earle Eglington after he moved to Las Vegas in 1911. The materials also include photographs of Native American artifacts, schools in Clark County, Nevada, artesian wells, the Hoover (Boulder) Dam, the Colorado River, Mt. Charleston, the Mormon Fort, the Stewart (Kiel) Ranch, the Las Vegas Ranch, and many early residents of Las Vegas.