The Howard Hughes Public Relations Reference Files (1931-1997) were compiled by Richard "Dick" Hannah, vice-president of the Los Angeles public relations firm Carl Byoir & Associates, which was hired to direct public relations for Hughes’ companies. The collection is primarily composed of newspaper clippings organized into reference files. A significant number of the files contain articles about Howard Hughes’ personal life, the operations of his companies, and legal and political disputes involving Hughes and his companies. The files also document a range of other subjects related to his business ventures, including aviation, aerospace, defense industries, motion picture studios, film stars, communism in Hollywood, and the House on Un-American Activities Committee (HUAC). Later in life Hughes became obsessed with how he was being portrayed in the media. In addition to collecting magazine articles, newspaper clippings, transcripts, screenplays, and books that referenced him. He also collected newspaper clippings about the activities of print media outlets, columnists, radio-television stations, current and former employees, and competitors. The collection also contains newspaper clippings about Watergate, organized crime, gambling, and Las Vegas and contains press releases, correspondence and records generated by Carl Byoir & Associates as well as Rosemont Enterprise, Inc.

The Donn Arden Papers (1910s-1990s) document Arden's sixty-plus years in the entertainment industry working in showrooms and nightclubs all over the world including Paris, France, Las Vegas, Nevada, New York, New York, and Los Angeles, California. Donn Arden worked as a choreographer, producer and director known for creating extravagant production shows that combined spectacular scenery and disaster with sequined and feathered showgirls. The collection is comprised of production notes, programs, photographs, posters, sheet music, correspondence, costume design sketches, press clippings, and magazine articles.