The Wilson Family Papers (1875-1918) document the personal and professional lives of James B. Wilson Sr., James B. Wilson Jr., and George Twison "Tweed" Wilson, early pioneers in Southern Nevada. The collection is comprised of personal correspondence, invoices and advertisements from the Wilson family business, the Sandstone Ranch, and photographs of the extended Wilson family.

The Harry Hayden Whiteley Architectural Records are comprised of architectural records (1931-1970) created and/or maintained by the American architect Harry Hayden Whiteley and/or his architectural firm, known as Harry Hayden Whiteley and Associates. This collection includes 30.21 linear feet of materials including 45 items from over 30 projects. The collection focuses on his work in the Las Vegas and Reno, Nevada areas. The materials feature both architectural drawings and project files. Architectural drawings include pencil and ink on tracing paper preliminary sketches and mounted artist’s renderings used for presentations and promotional materials. Project files include project correspondence, photographs, and structural calculations. The drawings also contain work from the architect Paul Revere Williams. The collection includes architectural drawings for hotels, shopping plazas, residential developments, and office buildings.

The Hank Greenspun Papers date from 1962 to 1966 and are comprised of draft manuscripts of the books Where I Stand: Records of a Reckless Man written by Hank Greenspun and Alex Pelle, and drafts of the manuscript Rebel with Many Causes, originally entitled Idol Smasher, a biography written about Hank Greenspun by Ed Reid.

The collection consists of letters, greeting cards, survey maps, newspaper clippings, legal papers, photographs, collected recipes, land sales and expense journals, and survey reference books. The material was created or collected by pioneering Nevada surveyor, engineer, and real estate entrepreneur J. T. (John Thomas) McWilliams and his wife, Iona, between 1900 and 1968.