The Mike O'Callaghan Professional Papers (1943, 1968-2004) mainly consist of research files gathered by Mike O'Callaghan in his post-political capacity as executive editor of the Las Vegas Sun as well as owner and publisher of the Henderson Home News, Boulder City News, and Green Valley News. The papers also contain handwritten and typewritten drafts of O'Callaghan's "Where I Stand" article for the Las Vegas Sun, along with his reporter's notebooks, monthly planners, and photographic prints. The research files cover a wide variety of topics, including but not limited to environmental issues; nuclear waste; state and local politics; military and veterans affairs; foreign relations including Israel, Iraq, and Korea; and education. The collection also contains copies of speeches given by O'Callaghan as the 23rd Governor of Nevada between 1971 and 1979, some of which contain handwritten notations.

The Story of Classic Las Vegas Oral History Interviews (approximately 1950-2006) is comprised of raw and edited video recordings of oral history interviews used for The Story of Classic Las Vegas documentary which was produced, directed, and edited by Lynn Zook. The documentary offers first person historical overviews of what it was like to live in Las Vegas, Nevada from the 1920s to the 1970s. Individuals interviewed include a wide range of community members of the Las Vegas Valley including business owners, educators, entertainers, politicians, gaming professionals, casino workers, and activists. Materials also include a media kit with promotional materials and interview transcript for one of the interviewees, Betty Willis.