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 Jim Ratigan Collection on Mike Miller (1982-2014) is primarily comprised of materials representing Mike Miller's involvement with creating Hey Reb! the official mascot for the University of Nevada, Las Vegas (UNLV) in 1982. Materials include meeting minutes from UNLV's mascot committee, various renditions of Hey Reb! created by Miller, newspaper clippings, as well as printouts of email correspondence from Miller to Jim Ratigan about the story of how he came to create the mascot. The collection also includes a copy of Miller's book, Larry the Last Leaf and a print of his painting, "Drawn to His Light." Also included are copies of programs for Miller's memorial service.