The Ainsworth Collection of Las Vegas, Nevada Memorabilia (1942-1965) consists of fliers, programs, and receipts from Las Vegas, Nevada events and gatherings. The material pertains to the Helldorado, Boulder Roundup, and Little Britches rodeos as well as local plays and musicals. Also of interest, the collection contains a 1942 World War II ration book.

The Albert S. Henderson Papers (1879-1962), document his career and service as a district judge in Las Vegas, Nevada. Included are correspondence, a personal statement from his election campaign, certificates and proclamations, his memorial book, numerous newspaper clippings, an 1879 edition of Eureka and Its Resources, and various ephemera: union cards, name tags, and election cards.

Flora Dungan Papers (1929-1974) contain high school and university records, certificates, newspaper clippings, press releases, notes, correspondence, and booklets about her life and political activism in Nevada. Also included are Legislative materials, an audio cassette tape, a copy of the Nevada Constitution, and an oil painting of Flora Dungan.

The El Rancho Vegas Collection (1953-1961) is comprised of materials and memorabilia from the El Rancho Vegas Hotel collected by former hotel controller, Frank Watts. Records include financial documents including endorsed checks to performers at the resort. Other items included unused stationary, copies of the menu, and memorabilia from the hotel. The collection also contains a bathmat, hangers, and a drinking glass from the hotel.

The Elmer R. Rusco Collection on Ethnicity and Race in Nevada (1964-1972) contains correspondence, court cases, employment information, and research materials compiled by Rusco for a book he was writing on race relations in Nevada.

The Elmo and Charlotte Ellsworth Papers (1948-1977) are comprised of business correspondence, room reservation records, promotional materials, and photographs from Elmo's employment at the Flamingo and Riviera Hotels in his work of securing conventions. There is also correspondence and promotional materials from his wife Charlotte Ellsworth, who worked as a reservations manager at the Riviera Hotel and the Frontier Hotel in Las Vegas, Nevada and the MGM Grand Hotel in Reno, Nevada.

The Nevada Official Bicentennial Book Collection (1975) contains materials related to the editing and publication of the book by the Nevada American Revolution Bicentennial Committee. It includes article submissions about Nevada history as well as a small amount of correspondence to Stanley Paher, the editor of the book.