The Ken Hanlon Jazz Music Manuscripts (approximately 1975-1990) is comprised of jazz music compositions that were gathered by the Arnold Shaw Popular Music Research Center at the University of Nevada, Las Vegas (UNLV) in Las Vegas, Nevada. The collection includes several scores and arrangements from Hanlon's ensembles, including the UNLV Jazz Band, Seventy-Six Trombones Ensemble, and the Si Zentner Ensemble.

The collection, dated 1941-1947, consists of loose-leaf notes from the daily journal of Arlin Rex Johnson (1898-1970), Budget and Planning Officer at the Coordinator of Information (COI) office in Washington, D.C. from September 2, 1941 to December 23, 1941, and a list of foreign visitors during his tenure as Assistant Director of Foreign Agricultural Relations at the United States Department of Agriculture from 1945-1947.

The Thomas L. Morgan Real Estate Development Records (1971-1997) relate to commercial and residential real estate development, primarily in Los Angeles, California and Las Vegas and Henderson, Nevada. Materials consist of Hughes Development/Summa Corporation projects including the Hughes Center and Playa Vista in Los Angeles, California, and Summerlin and the Hughes Center in Las Vegas, Nevada. There are also extensive records related to the financing and development of Green Valley Ranch and Lake Las Vegas, projects Morgan helped develop through his private company, Thomas Morgan & Associates. Also represented are a number of casino-related projects for the Sands, the Frontier, the Landmark, and the Westgate hotel-casinos. Additional materials include general business records, handwritten notes and memoranda, and correspondence; Summa financial papers and forecasts; books on finance and a 1982 Desert Inn Master Plan architectural portfolio.

The Elmo and Charlotte Ellsworth Photograph Collection (approximately 1940-1959) is comprised of black-and-white photographic prints and negatives. The images depict Charlotte and Elmo Ellsworth. Also included is an image of Elmo Ellsworth on horseback at the Las Vegas, Nevada airport for the arrival of the first United Airlines flight and an image of people at the Last Frontier Village in Las Vegas.