The Leon Rockwell Papers (1829-1986), consist of materials that document Leon Rockwell's life in Las Vegas, Nevada from 1906 until his death in 1968. Included are diaries, correspondence, photographs, postcards, Las Vegas community event programs, ledger sheets, business cards, and scrapbooks. There are a number of books, information on organizations and businesses that Rockwell owned, real estate documents, and early records of the Las Vegas Volunteer Fire Department, of which Rockwell was an original member.

The A. E. Cahlan Newspaper Columns (1930-1968) consists of scrapbooks containing a complete run of Cahlan's "From Where I Sit" editorial column that he wrote for the Las Vegas Review-Journal and the Las Vegas Sun" from 1930 to 1968.

The Sadie and Hampton George Papers (1874-1948) consist primarily of the incoming and outgoing correspondence of Sadie Kiel George and her husband, Hampton George, regarding proposed land and mineral rights sales. The collection also includes some personal correspondence, and two of the most significant letters in the collection deal with the deaths of brothers William and Edward Kiel, Sadie's uncles, who were found dead at the Kiel Ranch in October 1900. Also included in the collection are receipts, cancelled checks, tax notices, mining claims, and land deeds.

The Tonopah, Nevada Mining Town Photograph Album (approximately 1908) consists of twenty-two photographs in a leather-bound album. The photographs depict businesses, townspeople, street scenes, and mining operations in Tonopah, Nevada and the surrounding areas of Goldfield, Nevada and Mina, Nevada. Also included are photographs of a fire on May 12, 1908 that destroyed a block of commercial buildings in Tonopah, which were taken by local photographer E. W. Smith., and views of the downtown area both before and after the fire.

The George Knox Roth Collection (1959-1980) consists of newspaper clippings (including photocopies), magazine articles, newsletters, technical reports and publications, correspondence, notes, and photographs relating to the Atomic Energy Commission, the environmental impact of nuclear testing in Nevada, Nevada mining, Airwest and the Hughes Airport, and other aspects of Howard Hughes’ Nevada operations. The George Knox Roth Collection also includes correspondence and expense reports related to his own company, General Research Consultants.

The Bob McCaffery Collection on the Save the Hughes Flying Boat Campaign (1980-1983) documents efforts by activists to preserve the plane from destruction and its subsequent acquisition by the Aero Club of Southern California in 1980. The collection contains photographs and newspaper clippings about the Hughes H-4 Hercules flying boat nicknamed the "Spruce Goose" from the 1980s.

The William Hillman Shockley Photograph Collection (1875-1925, 1951) contains black-and-white photographs documenting mining operations at the Mount Diablo Mine and Millworks in Candelaria, Nevada. It also includes photographs of nearby operations including the Northern Belle Mine and the Princess Mill. The collection contains photographs of Shockley, his son, William Bradford Shockley, as an infant, as well as images of Shockley’s brothers, Walter A. Shockley and George Shockley.