The Larven Mason Photograph Collection (approximately 1930 to 1939) consists of photographic negatives with corresponding black-and-white photographic prints, as well as additional black-and-white photographic prints. The images depict the mining equipment, personnel, operations, and housing for the Blue Diamond Corporation mine in Blue Diamond, Nevada.

The Evan and Kathy Thompson Photograph Collection depicts Beatty, Nevada, Rhyolite, Nevada, and Keane Wonder Mine, California around 1925. The photographs include the Rhyolite Bottle House, mining operations in Rhyolite and Keane Wonder Mine, and citizens of Rhyolite.

The Thalia Dondero Political Papers (1934-2003), contain correspondence, pamphlets and reports used by Dondero to conduct official business, as well as information on county and city budgets, social and health services, liquor and gaming, planning, public works, environmental impact reports and a large section on water management. Dondero served as a Clark County Commissioner for twenty years and engaged in numerous other civic and political activities. The bulk of the materials are derived from Dondero's last four years in office, 1990-1994, but a few items from Dondero's earlier career are included.