Jack was the youngest of four siblings (the others were Harry, Albert and Ben) and the brother with the greatest taste for limelight and legend. Ben actually died of exhaustion in the efforts to secure sound, and it was thereafter that Jack was in charge of production at the Burbank studio, presiding over Darryl F. Zanuck and Hal Wallis and surviving long enough to bring “My Fair Lady” to the screen personally and argue with Warren Beatty over whether “Bonnie and Clyde” was coherent or decent. He ran the turbulent careers of Bogart and Bette Davis, Cagney and later Joan Crawford. He turned out gangster pictures and musicals, biopics and Westerns, Errol Flynn and Ronald Reagan. Hated and reviled by many, he seldom lost his confidence.