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 Sperling Kronberg Mack Holocaust Resource Center Records (1971-2018) mainly consists of correspondence, event planning documents, financial records, subject files, and newspaper clippings created by or related to the Sperling Kronberg Mack Holocaust Resource Center and the Nevada Governor’s Advisory Council on Education Relating to the Holocaust. Materials document educational conferences, remembrance events, and student field trips; curriculum planning, involvement with the Clark County School District, and educational materials about the Holocaust and other related historical events; and grant and fundraising activities. The collection also includes photographs and proclamations.

Collection is comprised of materials, dating roughly 1830-1995, from Harvey's Lake Tahoe Hotel and Casino Resort and the associated Harvey J. Fuller notes on casinos in Nevada. The bulk of the collection consists of paper inventories, Fuller's original notes, casino marketing materials, and casino and gambling merchandise. Also included are a number of artifacts and nineteenth and early twentieth century gambling machines.