Hal_B._Wallis--Richard_D._Zanuck

Harold Brent Wallis (born Aaron Blum Wolowicz; October 19, 1898 – October 5, 1986) was an American film producer. He is best known for producing Casablanca (1942), The Adventures of Robin Hood (1938), and True Grit (1969), along with many other major films for Warner Bros. featuring such film stars as Humphrey Bogart, John Wayne, Bette Davis, and Errol Flynn. As a producer, he received 19 nominations for the Academy Award for Best Picture.
Later on, for a long period, he was connected with Paramount Pictures and oversaw films featuring Dean Martin, Jerry Lewis, Elvis Presley, and John Wayne.