The New York-New York Hotel and Casino 9-11 Heroes Tribute Collection consists of materials from the "Heroes of 9-11" display that was at the New York-New York Hotel and Casino in Las Vegas, Nevada from 2001 to 2012. The materials primarily consist of more than 5,000 t-shirts left at the memorial by visitors to Las Vegas, mostly from fire departments and law enforcement agencies from around the United States. Visitors left shirts and other items at the memorial as a sign of respect for the men and women who died during the terrorist attacks in New York City and Washington, D.C. on September 11, 2001. The collection also houses memorabilia and other items left at the memorial, including flags, hats, pins, buttons, flowers, and embroidered emblems and insignias. The materials also contain documentation of the memorial, including promotional and press materials, video recordings from the news media, photographs, and newspaper articles.

The Howard R. Hughes College of Engineering Records contain materials dating from approximately 1968 to 2017 that document the establishment of the School of Engineering and later the Howard R. Hughes College of Engineering School. Materials include records of the Nevada Development Authority Partners for Industry through Engineering and Education (PiE2) program during the 1980s that was headed by Bob Gore of Summa Corporation (formerly known as the Howard Hughes Corporation). Collection records also include samples of class listings, phone directories, degree information, college rules and bylaws, and fact sheets and brochures for different engineering degree programs at UNLV. Materials also include accreditation questionnaires from 1989, 1990, and 1992. Also included are promotional brochures and pamphlets for the school from 2015 to 2017.