The Merle and Beulah Frehner Photograph Collection contains photographs of Southern Nevada from 1905 to 1955. The materials include photographs of the Frehner freight teams transporting ore, schools and students in the Moapa Valley, the Colorado River, and parades in Southern Nevada.

The Soroptimist International Sierra Nevada Region Records are comprised of memoranda, newspaper clippings, brochures, and communications from 1975 to 1998. The collection includes information about the Soroptimist International Sierra Nevada Region chapter's involvement with women's rights issues, primarily the Equal Rights Amendment ratification campaign in Nevada and California, as well as national efforts.