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.

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 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.