Roy Del Ruth directed which movies? The Maltese Falcon, Ziegfeld Follies, On Moonlight Bay, It Happened on Fifth Avenue, The Alligator People, Lady Killer, Broadway Melody of 1936, The West Point Story, Born to Dance, Blonde Crazy, Taxi!, Broadway Melody of 1938, Phantom of the Rue Morgue, Kid Millions, Always Leave Them Laughing, Starlift, The Chocolate Soldier, Three Sailors and a Girl, Broadway Rhythm, Barbary Coast Gent