The H. E. and Ruth Hazard Political Papers (1937-1977) consist of papers and memorabilia related to Nevada and national Democratic politics. It includes materials about the Nevada legislature; clippings and information about the Nevada Tax Commission; political memorabilia including invitations and programs related to the presidential inaugurations of Lyndon Johnson and Jimmy Carter; documents about the purchase of Basic Magnesium Inc. by the state of Nevada; and newspaper clippings.

The Oran K. Gragson Papers (1955-1998) contain former Las Vegas, Nevada Mayor Oran K. Gragson's professional and personal papers, and include correspondence, files concerning Gragson's tenure as Mayor of Las Vegas, Nevada, arbitration documents from disputes between labor unions and Las Vegas casinos, committee notes, financial plans, and documents from Clark County and Las Vegas government departments. The collection also contains city development plans, environmental reports, political party documents, memorabilia, ephemera, photographs, awards, newspaper clippings, and scrapbooks.

The Nevada Consolidated Copper Company Records (approximately 1887-1978) contain the business records of the company, including correspondence, freight bills, ledgers, maps, leaching data, and books relating to mining. The majority of the records post-date the company's name change to Kennecott Mining Company.

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 Las Vegas and Tonopah Railroad Blueprints consists of twenty-four of the original thirty blueprints as part of the Interstate Commerce Commission (I.C.C.) Valuation Index Section I. They are labeled "Right-of-Way & Track Map, Las Vegas & Tonopah Railroad" and dated June 30, 1915. The blueprints contain four miles of railroad lines per sheet with a scale of 6 3/4 inches per mile. The collection also includes one sheet from the Bullfrog Goldfield Railroad company, which used the track, yard, and facilities of the Las Vegas and Tonopah and Railroad company between Beatty and Goldfield, Nevada.

The Valda and Esper Esau Collection on Lido de Paris (1954-2014) mainly consists of newspaper clippings, ephemera, and programs documenting the career of entertainer Valda Esau, who danced in the Lido de Paris show at the Stardust Hotel and Casino in Las Vegas, Nevada in the late 1950s. Other materials in this collection include show programs for other shows held in France featuring the Bluebell Girls dance troupe such as the original Lido de Paris. The collection also includes invitation and photographs featuring Esper Esau from Pzazz! '70, a show that was produced by Donn Arden at the Desert Inn Hotel.

The collection, 1949 to 2006, was compiled by Clifford Olsen, a containment physicist at the Nevada Test Site (NTS). It consists of research notes and working papers written by Olsen and other scientists, publications, epoxy aggregate samples, work-related correspondence, nuclear-test-event data, and interviews conducted by Olsen with work colleagues involved with the NTS.