The Sierra Club Toiyabe Chapter Records (1951 to 2021) are composed of files from Sierra Club officers and environmental activists in the Southern Nevada (formerly Las Vegas) Group of the Toiyabe Chapter. The collection documents the involvement of the Southern Nevada group in a variety of environmental concerns, such as air quality, transportation, urbanization, and nuclear issues, in which the chapter has expressed interest. The records are comprised of correspondence, memoranda, meeting minutes and agendas, newspapers, magazines, newsletters, pamphlets, press releases, legislation, recommendations, resolutions, and general information. Due to the group’s location in the heart of the Mojave Desert, the collection provides excellent case studies of significant changes in the post-World War II American environmental movement, notably the increased recognition of the worth of desert lands.

The Sands Hotel Public Relations Records document the history of the Las Vegas casino and hotel from 1952 to 1977. It is comprised primarily of photographs, mostly 8x10 black-and-white prints, color prints, and transparencies. Most were produced by the Las Vegas News Bureau. Also included are newspaper clippings, brochures, press releases, and inter-office memos relating to the advertising and promotion department. Materials also include reels of 16mm film of the Sands opening, various shows and events including Frank Sinatra and Dean Martin's "Summit Meeting" performances with the Rat Pack, and footage from various television productions filmed at the Sands.

The Irwin and Susan Molasky Papers (early 1900s-2012, bulk 1970-2012) primarily contain materials related to real estate development work by Irwin Molasky with his company, the Molasky Group of Companies, in Las Vegas, Nevada. In addition, the collection includes personal photographs (early 1900s-2011, bulk 1970-2011) of family members, friends, and events, as well as a Proclamation from Clark County, Nevada to establish the Molasky Family Park.

Collection is comprised of photographs of Las Vegas, Nevada community leaders Flora and Stuart Mason and three event programs from Temple Beth Sholom (Las Vegas, Nevada). Materials date from approximately 1965 to 2010.