 Flash Gordon: The Deadly Ray From Mars1966 · Writer | Writer |
 Squadron of Doom1949 · Screenplay | Screenplay |
 Pardon My Gun1942 · Writer | Writer |
 Holt of the Secret Service1941 · Screenplay | Screenplay |
 The Medico of Painted Springs1941 · Writer | Writer |
 Deadwood Dick1940 · Screenplay | Screenplay |
 Scouts to the Rescue1939 · Screenplay | Screenplay |
 Mars Attacks the World1938 · Screenplay | Screenplay |
 Flaming Frontiers1938 · Screenplay | Screenplay |
 Flash Gordon's Trip to Mars1938 · Screenplay | Screenplay |
 Rocket Ship1938 · Screenplay | Screenplay |
 Forbidden Valley1938 · Director, Screenplay | Director, Screenplay |
 Tim Tyler's Luck1937 · Director, Screenplay | Director, Screenplay |
 Wild West Days1937 · Screenplay | Screenplay |
 Secret Agent X-91937 · Screenplay | Screenplay |
 Ghost Patrol1936 · Screenplay | Screenplay |
 The Lost Jungle1934 · Writer | Writer |
 The Lost Jungle1934 · Screenplay | Screenplay |
 The Mystery Squadron1933 · Screenplay | Screenplay |
 The Wolf Dog1933 · Screenplay | Screenplay |
 Fighting With Kit Carson1933 · Screenplay | Screenplay |
 The Whispering Shadow1933 · Screenplay | Screenplay |
 The Devil Horse1932 · Writer | Writer |
 The Last of the Mohicans1932 · Screenplay | Screenplay |
 The Shadow of the Eagle1932 · Writer | Writer |
 The Lightning Warrior1931 · Screenplay | Screenplay |
 The Galloping Ghost1931 · Screenplay | Screenplay |
 The Vanishing Legion1931 · Screenplay | Screenplay |
 The Phantom of the West1930 · Screenplay | Screenplay |
 The King of the Kongo1929 · Screenplay | Screenplay |
 The Red Sword1929 · Writer | Writer |
| HHey Rube!1928 · Screenplay | Screenplay |
 Tropic Madness1928 · Writer | Writer |
 The Vanishing West1928 · Writer | Writer |
 Terror Mountain1928 · Writer | Writer |
 Vultures of the Sea1928 · Writer | Writer |
| LLand of the Lawless1927 · Writer | Writer |
 Out of the West1926 · Writer | Writer |
 The Lodge in the Wilderness1926 · Writer | Writer |
 Don Dare Devil1925 · Screenplay | Screenplay |
 Greater Than a Crown1925 · Writer | Writer |
 The Sunset Trail1924 · Writer | Writer |
 Daring Chances1924 · Writer | Writer |
 The Measure of a Man1924 · Screenplay | Screenplay |
 The Western Wallop1924 · Screenplay | Screenplay |
 Alimony1924 · Screenplay | Screenplay |
 Daytime Wives1923 · Writer | Writer |
 Can a Woman Love Twice?1923 · Screenplay | Screenplay |
 While Paris Sleeps1923 · Writer | Writer |
 The Foolish Matrons1921 · Writer | Writer |
