The Lorenzo Romans Papers (1875-1965) are comprised of photographs, newspaper clippings, a family photograph album, a diary, a diploma, and related ephemera. The materials were owned by Lorenzo Romans, a California real estate developer who moved to Las Vegas late in life after a short visit to Helen Stewart's Las Vegas Rancho in 1894.

The Nevada Statehood Commemorative U.S. Postage Stamps and Coin collection contains one sheet of the 1964 Nevada Statehood Centennial Stamp, printed from plate number 27798, and one proof copy of the 1964 Nevada Centennial Medallion.

The Las Vegas Convention and Visitor Authority Records (1973-2007) contain memorandums written by Rossi Rallenkotter, the Vice President of the Authority's marketing division to Las Vegas hotel sales and travel directors. The memorandums provide monthly visitor statistics. The collection also includes information on riverboat gambling legislation and the capacities of function/meeting rooms in various Las Vegas hotels. Also included are LVCVA marketing plans and bulletins.

The Pacific Engineering and Production Company of Nevada (PEPCON) Disaster Collection of News Articles (1988-1992) consists of articles from Las Vegas and other state and regional newspapers about the PEPCON plant explosion that took place in May of 1988. Also included are United Press International press releases from October to December, 1988.

The Geneva Stark Merwin Photograph Collection features photographic prints and negatives of locations throughout Pahrump, Nevada between 1941 and 1942. Primary locations include a Pahrump school and Pahrump Ranch, as well as locations in local fields and mountains. The photographs capture candid scenes of people walking to school and feeding animals.