Flash Gordon: The Deadly Ray From Mars 1966
Writer
Squadron of Doom 1949
Screenplay
Pardon My Gun 1942
Writer
Holt of the Secret Service 1941
Screenplay
The Medico of Painted Springs 1941
Writer
Deadwood Dick 1940
Screenplay
Scouts to the Rescue 1939
Screenplay
Mars Attacks the World 1938
Screenplay
Flaming Frontiers 1938
Screenplay
Flash Gordon's Trip to Mars 1938
Screenplay
Rocket Ship 1938
Screenplay, Original Story
Forbidden Valley 1938
Director, Screenplay
Tim Tyler's Luck 1937
Director, Story, Screenplay
Wild West Days 1937
Screenplay
Secret Agent X-9 1937
Screenplay
Ghost Patrol 1936
Screenplay
The Lost Jungle 1934
Writer
The Lost Jungle 1934
Supervising Editor, Screenplay
The Mystery Squadron 1933
Screenplay
The Wolf Dog 1933
Screenplay
Fighting With Kit Carson 1933
Screenplay
The Whispering Shadow 1933
Screenplay
The Three Musketeers 1933
Story
The Devil Horse 1932
Writer
The Hurricane Express 1932
Story
The Last of the Mohicans 1932
Screenplay
The Shadow of the Eagle 1932
Editor, Writer
The Lightning Warrior 1931
Screenplay
The Galloping Ghost 1931
Screenplay
The Vanishing Legion 1931
Editor, Screenplay
Credits from TMDB.