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 Penelope Ruchman Collection of Las Vegas, Nevada Casino Professionals Oral Histories includes interviews conducted by Ruchman from approximately 1999 to 2001 of casino industry workers who worked in Las Vegas, Nevada. The majority of interviews were conducted by Ruchman in their office at Gambler's Book Shop (GBS), but some where conducted in interviewee's homes and offices, or over the phone. The collection represents Ruchman's efforts to interview and document a generation of early casino industry workers that were quickly aging. The project was intended to be compiled as a definitive history of Las Vegas and American gambling, entitled "After the Gold Rush." The project was permanently postponed in the fall of 2001 when Ruchman left GBS to work for Park Place Entertainment as a corporate business and operations analyst, and later as casino operations director for Caesars Palace. Not all interviews have digital transcripts available.