The Nevada Consolidated Copper Company Photograph Albums (1906-1907) contain two photograph albums from the mining company's chief engineer's office. The photograph albums include cyanotype and black-and-white photographs depicting the construction of the smelting plant, equipment, railroad, and landscape of Ruth, Nevada.

The Southern Nevada Historical Society Records document the management and development of the Southern Nevada Historical Society (SNHS) as well as various historical projects in Las Vegas and Southern Nevada that the society sponsored from 1948 to 1983. The records include SNHS correspondence (1951-1978), meeting minutes (1958-1983), and accounting information (1959-1980). It also contains copies of the SNHS Backtrails Newsletter, promotional material for events, membership lists, and research materials for various projects related to the history of southern Nevada and Las Vegas.

The Fort Mojave Indian School Records (1890-1923) consist of correspondence, finance and administrative records, pump station blueprints, and policy implementation and fact finding records. The school served the Hualapai and Mojave Indians at a site near present-day Kingman, Arizona. The information is contained in two bound volumes.