The Tonopah Mining Company Records derive from the office of the company’s general manager in Tonopah, Nevada and consist of documents directly generated by its mining and milling operations from 1901 through 1941. The collection includes daily work reports, assay reports and certificates, employee time cards, invoices and receipts for mining equipment and supplies, monthly stores reports, and the company’s numerous insurance policies. Several of the company’s annual reports, including an original typescript copy of the 1907 annual report, are included in the collection. Additionally, select records from the company's subsidiary, Desert Power and Mill Company, as well as the Tonopah and Goldfield Railroad, which include overcharge claims, freight and repair bills, and delivery receipts are included in the collection.

The McCall Family Papers are comprised primarily of family photographs and correspondence from 1910-1970. The materials concentrate on Quannah McCall and his daughter, Connie McCall, both were well known dentists in Southern Nevada. The materials also contain letters, postcards, holiday cards, and birth, death, and marriage certificates, as well as school commencement announcements for family members.

The Las Vegas Valley Land Ownership Collection contains lists of property owners in the Las Vegas Valley from 1962 to 1965. Materials are organized by Section and Township, all located in Ranges 60 to 63. Some files also contain plat maps.

The Mountain West's Yucca Mountain Socioeconomic Project Records (1987-1994) contain reports on the effects to indigenous peoples, flora and fauna, and transportation relating to the deposits of nuclear waste in Yucca Mountain, Nevada. Mountain West studied were Nye, Lincoln, Esmeralda, and Clark counties. Also included are analysis and impact assessments, and an oral history of Ed Slavin, a Tonopah, Nevada resident.

The Prince Stanislaus J. Bielski Papers, 1908-1979, are comprised of legal and personal documents, including letters and genealogical records, primarily referencing litigation between Prince Stanislaus J. Bielski and his wife, Jeannine Bielski De Ayala. Also included are photographs of Bielski, his family, and friends.

The Elsie and Richard Goldsworthy Collection on Las Vegas Ephemera (1960-1999) contains ephemera from hotels and casinos in Las Vegas, Nevada and includes programs, table tents, and postcards. There is additional material created by the Las Vegas Chamber of Commerce and invitations to special events hosted by various Las Vegas dignitaries. Additional materials includes programs and fliers from local theater companies in Las Vegas, Nevada.

The Nevada Test Site Roadrunners Special Projects Collection on Reconnaissance Aircraft dates from 1965 to 1998 and contains flight manuals, technical manuals, pilot information, and photographs pertaining to reconnaissance aircraft and programs. The collection includes four A-12 technical manuals, National Air and Space Intelligence Center publications, and a list of pilots who flew the U-2 (Dragon Lady) aircraft from 1955 to 1993. Twenty of the twenty-eight photographs are color prints and include cockpit and flight images.