The sources for Citizen Kane, the 1941 American motion picture that marked the feature film debut of Orson Welles, have been the subject of speculation and controversy since the project's inception. With a story spanning 60 years, the quasi-biographical film examines the life and legacy of Charles Foster Kane, played by Welles, a fictional character based in part upon the American newspaper magnate William Randolph Hearst and Chicago tycoons Samuel Insull and Harold McCormick. A rich incorporation of the experiences and knowledge of its authors, the film earned an Academy Award for Best Writing for Herman J. Mankiewicz and Welles.

Ganna Walska was a Polish opera singer and garden enthusiast who created the Lotusland botanical gardens at her mansion in Montecito, California. She was married six times, four times to wealthy husbands. The lavish promotion of her lackluster opera career by her fourth husband, Harold Fowler McCormick, inspired aspects of the screenplay for Citizen Kane.