The Chester R. Longwell Professional Papers (1886-1974) document Longwell's professional career as a geologist and his pioneering field work in Clark County, Nevada. Included are Longwell's field notes; manuscripts, articles and speeches related to geology; personal and business correspondence; professional publications; subject and name files; specimen tags; photographic prints, negatives, and slides; and geological and topographical maps, primarily of Nevada, California, Arizona, and Utah.

The Mesquite Club Records (1911-2016) contain the organizational files of the Mesquite Club, the oldest women's service club in Las Vegas, Nevada. Materials include meeting agendas and minutes, correspondence, committee reports, newsletters, scrapbooks, and photographic prints and negatives. The records document the club's administrative structure, community service projects, social events, and relationship with the General Federation of Women's Clubs (GFWC).