The River Mountains Trail Partnership Records date from 1995 to 2015 and document the planning and construction of the River Mountains Loop Trail in Clark County, Nevada. The collection contains meeting agendas and minutes, correspondence, project notes, trail maps, land surveys, grant applications, photographic slides of the trail and Lake Mead, environmental assessments, ephemera from National Trails Day, trail guides, interpretive plans, and development reports.

The Jon E. Cobain Papers (1963-2009) contains material representing Cobain's experience as the first official graduate of Nevada Southern University (later University of Nevada, Las Vegas) in 1964. Materials include photographs of Cobain and his family, a scrapbook from his 1964 graduation day, newsletters, a copy of Beau's Bits Handbook, personal correspondence, and his diploma. This collection is comprised exclusively of digital surrogates.

The Aaron Williams Photograph Collection (approximately 1968 to 1983) consists of three black-and-white photographic prints. Two of the images are of the groundbreaking ceremony of the Senior Citizens’ Center with Las Vegas, Nevada Mayor Oran Gragson, and the third of three unidentified individuals.