The C. Vern Olmstead Professional Papers (1940-1975) contain materials related to Olmstead’s work as a prominent meat industry executive. The collection pertains to the preparation, cutting, storage, marketing, and distribution of meats including beef, pork, and poultry. Materials include reports, correspondence, newspaper and magazine clippings, photographic prints and slides, and publications regarding topics relevant to the handling and sale of meat in the United States and Canada.

The Charles P. and Delphine Squires Papers from 1882 to 1964, with bulk dates from 1905 to 1964, contain book and short story manuscripts, articles, press releases, newspaper clippings, and radio scripts written by Squires and his wife, all relating to their early life in Las Vegas. Also included are report cards, certificates, Parent Teacher Association material, Mesquite Club records and church activity materials.

The Nevada Mining Collection is comprised of records that document mining and mines in Nevada from 1842 to 1966. The majority of the collection includes records of various mines and mining companies located in the Esmeralda, Lincoln, Clark, White Pine, and Nye counties, dating from 1900 to 1928. The collection includes financial, administrative, and business related records; photographs of miners, mining camps, and towns; correspondence; maps; newspaper clippings, pamphlets, newsletters, and booklets.

The Maurine and Fred Wilson Papers (1888-1991) contain family papers and the historical research of Fred Wilson. It includes correspondence between Maurine and Fred Wilson, as well as Maurine Wilson’s diaries, calendars, and materials related to her career as a music teacher. The collection also contains Fred Wilson’s research files about the history of Southern Nevada as well as the First Methodist Church in Las Vegas, Nevada.

The Clark County Economic Opportunity Board (CCEOB), (1962-1973) was the regional legal body responsible for receiving and administering funds in Las Vegas, Nevada allocated under the Economic Opportunity Act, a part of the Johnson's Administration's War on Poverty Program. The collection concentrates on the high funding years from 1965 until the early 1970s, when the CCEOB disbursed funds to a variety of community action programs and organizations. Records are administration and project oriented and include meeting minutes, correspondence, financial and committee reports, personnel policies, job descriptions, funding information, appointments, program officer listings, as well as project applications and program descriptions.

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 Roger D. Foley Papers on United States v. Cappaert are comprised of materials collected by District Judge Roger D. Foley while performing his duties as judge in United States v. Francis Leo Cappaert, et al. from 1972 to 1976. The collection includes transcripts of the case, exhibits, and copies of motions filed with the Court in regards to this case, which centered on the protection of the Devils Hole pupfish in Nevada.