The Miriam "Mimi" Katz Papers are mainly comprised of materials documenting Katz's involvement with community organizations in Las Vegas, Nevada from the 1940s to 2015 (the bulk of the materials date from 2002 to 2014). A large portion of the collection consists of planning documents, correspondence, event programs, newsletters, meeting agendas, meeting minutes, photographs, and other records related to Katz's involvement in the Brandeis National Committee Las Vegas Chapter and the Temple Beth Sholom Women's League. The collection also includes similar types of materials that document Katz's work with other community groups such as the Jewish Community Center of Southern Nevada and the League of Women Voters, and her work on the political campaigns of Democratic state and federal politicians.

The Southern Nevada Chapter of the American War Mothers Organization Records (1947-1995) are comprised primarily of scrapbooks containing correspondence and minutes, numerous newspaper clippings, and photographs. Also included are pamphlets on American War Mothers organizational rituals, bylaws, history, ceremonial ephemera, flags, and a Henderson Chapter Charter. The materials also contain items relating to the North Las Vegas Chapter, the Rose Garden Chapter, and the State Chapter.

The Collection on the Las Vegas, Nevada Jewish Community spans from 1964 to 2006 and is comprised of scrapbooks, genealogies, ephemera, and other material produced by or for the community. The Hadassah scrapbooks date from 1964 through 1971 and contain invitations, photographs, and records of events and fundraising efforts. Material related to various congregations includes bulletins, fliers, correspondence (form letters), photographs, newspaper clippings, and recorded media. The Jewish Genealogy Society records include bulletins, newsletters, and meeting agendas. Also included is a family genealogy.

The Leon Rockwell Photograph Collection (approximately 1850-1979) contains black-and-white photographic prints, negatives, and slides, as well as postcards and tintypes. The images portray the lives of the Rockwell family in southern Nevada, their travels throughout New York and the western United States, and their immediate and extended family members. Also included are images of the volunteer and early firefighters of Las Vegas, Nevada, the Rockwell's family cabin at Mount Charleston, Nevada, and the Rockwell family home in Las Vegas. Portions of the images are from the Rockwell family travels across Nevada, Utah, New Mexico, Arizona, and California and depict historic locations such as Cove Fort, Utah; Rhyolite, Nevada; and Pueblo Grande de Nevada.

The Benedict Family Papers materials date from roughly 1905-1998 and are comprised of correspondence and letters (1969-1971) written to Howard Hughes by the public. The collection also contains correspondence written to Robert Maheu, former chief executive of Nevada operations for Howard Hughes. The collection also includes a variety of casino and gambling related product catalogs, gaming guides for Las Vegas casinos, and of research papers and reports primarily relating to sports betting and cheating.