The Mary Jane Griffith Reiter Papers date from 1919 to 1964. The papers document Nevada history and her family’s business and civic work; they contains her grandmother's will, a ledger detailing the costs and expenses for rental properties, and reports and minutes from the Colorado River Commission. It also includes a 1964 bibliography of materials on Nevada.

The Wilbur and Toni Clark Papers date from 1944 to 1991, with the bulk from 1953 to 1963 and document the lives of Wilbur and Toni Clark in Las Vegas, Nevada and the development of the Desert Inn Hotel and Casino. The collection includes correspondence from Wilbur Clark to those he identified as important individuals including government officials and celebrities. It also includes materials related to Clark’s plan of building luxury apartments near the Desert Inn, and newspaper clippings and scrapbooks about the Clarks and the Desert Inn. The collection contains some audiovisual materials including Wilbur and Toni Clark's home movies, news footage, and film footage of Las Vegas, Nevada and the Desert Inn.