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 Josephine A. Johnson Diaries (approximately 1940-1978) consist of the personal diaries of Josephine Johnson, a homemaker who moved to Las Vegas, Nevada in 1952. Included in the daily handwritten entries are prices of goods and services, shops and businesses frequented by the family, anecdotes about the weather, and some receipts, notes, and ephemera kept inside the diaries. Also included are two Bibles and a small personal phonebook.