The Thomas Clark Professional Papers (1950-1998) contain materials from his tenure as a Professor of English at the University of Nevada, Las Vegas (UNLV), which are divided into two series. The gaming research series includes newspaper clippings, correspondence, brochures, bulletins and articles. Also included are book chapters, a glossary of terms used in the casino industry, and gambling guides. In the linguistics and teaching series there are research files, articles, speeches, correspondence, interviews, multimedia, workshops, and conference materials. Also included are files on graffiti, symbolism, ethnic and regional speech differences, language usage, and National Council of Teachers of English (NCTE) material. Additional materials include colleague publications and cassette tapes of interviews from students in courses Clark taught at UNLV.

The material is comprised of the organizational records of the Imperial Royal Sovereign Court of the Desert Empire and its predecessor, the Royal Barony of the Desert Empire, from 1997 to 2003. The records contain administrative and financial records such as charters, bylaws, financial reports, meeting minutes, correspondence, and publicity documenting the club’s activities in Southern Nevada.

The History of Nursing in Southern Nevada Oral History Project Records (1965-2014) are comprised of material related to a volunteer project initiative at the University of Nevada, Las Vegas School of Nursing to conduct oral history interviews with nurses who have practiced in Southern Nevada. The collection contains subject files related to the project, as well as audio, video, and transcript files for the interviews. The collection also includes general information on nursing in Southern Nevada such as research papers and documents from the Nevada Nurses Association.