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 Karl Carsony Papers (1918-2011) are comprised of photographs, newspaper clippings, ephemera, and artifacts representing Karl (Schrom) Carsony's acrobatic career and personal life. The bulk of the materials in this collection date from approximately the early 1950s through the late 1970s. The materials also include vacation photographs of Karl (Schrom) Carsony and his wife, Margot Meyers. The materials also include promotional photographs, posters, and fliers for the Carsony Brothers, which was an acrobatic show consisting of Karl Carsony and his twin brothers, Joe and Bert Schrom.

The Joseph LaMar Foremaster Photograph Collection includes black-and-white photographic prints and negatives of structures at the Old Ranch (Stewart Ranch) in Las Vegas, Nevada from approximately 1920 to 1939 when the Foremaster family lived and worked on the land.

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.