The Elizabeth von Till and Claude N. Warren Professional Papers (1916-2021) are comprised of the personal and professional papers of anthropologist Claude N. Warren and historical preservationist Elizabth von Till Warren. The materials in this collection primarily consist of research files, maps, and drawings on various archaeological and historical preservation projects in southern Nevada of which they both were involved. This collection includes field notes and surveys from archaeological projects such as the Old Las Vegas Mormon Fort and the Las Vegas Springs Preserve. Records on von Till Warren's involvement with the Old Spanish Trail Association, Southern Nevada Historical Society, and historic preservation work around southern Nevada are represented. Also included are Robert H. Crabtree's archaeological research files, a colleague of Claude Warren who bequeathed his professional files to him upon his death.

The Fallman Family Papers (approximately 1950-2005) consist of correspondence, newspaper clippings, photographic prints and slides, scrapbooks, and pamphlets from James and Ima Fallman and their daughter, Janice. The correspondence primarily relates to James and Ima Fallman and chronicles Ima's involvement with the Francisco Garces chapter of the Daughters of the American Revolution (DAR), James's work as a bartender in Las Vegas, Nevada, and awards he received during World War II. The newspaper clippings mention either James Fallman or his daughter, Janice, and her involvement with the Las Vegas High School Rhythmettes dance team. The majority of materials from Janice describe her school days at Las Vegas High School and events participated in as a child and young adult.