Sam Wood
Lloyd Bacon
Busby Berkeley
William A. Seiter
Tay Garnett
Irving Cummings
Richard Wallace (director)
George Marshall (director)
Alfred E. Green
David Butler (director)
Jack Conway (filmmaker)
Robert Z. Leonard
Raoul Walsh
Sidney Lanfield
H. Bruce Humberstone
William A. Wellman
Mervyn LeRoy
Lewis Stone
W. S. Van Dyke
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Robert Zigler Leonard (October 7, 1889 – August 27, 1968) was an American film director, actor, producer, and screenwriter. Wikipedia