1. MGM film grosses, 1924–1948: The Eddie Mannix Ledger
2. Schaefer recalled that a typical day on the job included opening and in some cases answering Jack Warner's mail, informing him of important stories in the trade papers and accompanying him to meetings and screenings. See Sperling Cass Warner Millner Cork Warner Jack JrHollywood Be Thy Name: The Warner Brothers StoryRocklin , CA 1994 216 217
3. The studio was incorporated as “Warner Bros” and this was used on their logo rather than “Warner Brothers”. For an early history of the Warner family and the studio see Clive HirschhornThe Warner Bros. StoryLondon 1979 8 18
4. See Gomery DouglasThe Hollywood Studio SystemLondon 1986 104 104 and Ephraim Katz,The Film Encyclopedia(New York, 1979), p. 739.