| The Shop Girl | 1916 | Writer |
| The Nuremberg Watch | 1916 | Writer |
| The Wooing of Princess Pat | 1918 | Writer |
| That Girl Montana | 1921 | Writer |
| Man Trackers | 1921 | Writer |
| The Deputy's Double Cross | 1922 | Writer |
| Perils of the Yukon | 1922 | Writer |
| Thru the Flames | 1923 | Writer |
| The Satin Girl | 1923 | Writer |
| Martin of the Mounted | 1926 | Writer |
| The Stolen Ranch | 1926 | Writer |
| Blazing Days | 1927 | Writer |
| Hard Fists | 1927 | Writer |
| The Courage of Collins | 1927 | Writer |
| The Vanishing Rider | 1928 | Writer |
| Burning the Wind | 1929 | Writer |
| Hoofbeats of Vengeance | 1929 | Screenplay |
| The Harvest of Hate | 1929 | Writer |
| The One Way Trail | 1931 | Screenplay |
| The Last Frontier | 1932 | Screenplay |
| Jungle Mystery | 1932 | Screenplay |
| The Devil Horse | 1932 | Writer |
| The Phantom of the Air | 1933 | Screenplay |
| Tarzan l'intrépide | 1933 | Writer |
| Perils of Pauline | 1933 | Screenplay |
| Pirate Treasure | 1934 | Screenplay |
| The Red Rider | 1934 | Screenplay |
| Rustlers of Red Dog | 1935 | Screenplay |
| The Roaring West | 1935 | Writer |
| Stormy | 1935 | Writer |
| Flash Gordon | 1936 | Screenplay |
| The Phantom Rider | 1936 | Screenplay |
| The Crooked Trail | 1936 | Screenplay |
| The Idaho Kid | 1936 | Screenplay |
| The Trusted Outlaw | 1937 | Screenplay |
| Gun Lords of Stirrup Basin | 1937 | Screenplay |
| A Lawman Is Born | 1937 | Writer |
| Doomed at Sundown | 1937 | Screenplay |
| Boothill Brigade | 1937 | Writer |
| Arizona Gunfighter | 1937 | Screenplay |
| Paroled - To Die | 1938 | Screenplay |
| The Rangers' Round-Up | 1938 | Writer |
| Rocket Ship | 1938 | Screenplay |
| Thunder in the Desert | 1938 | Screenplay |
| The Feud Maker | 1938 | Screenplay |
| Whirlwind Horseman | 1938 | Screenplay |
| Songs and Bullets | 1938 | Screenplay |
| Flaming Frontiers | 1938 | Screenplay |
| Paroled from the Big House | 1938 | Writer |
| Durango Valley Raiders | 1938 | Screenplay |
| Zorro, l'Araignée contre la Pieuvre | 1938 | Screenplay |
| The Phantom Creeps | 1939 | Screenplay |
| Trigger Pals | 1939 | Writer |
| Scouts to the Rescue | 1939 | Screenplay |
| Smoky Trails | 1939 | Screenplay |
| Texas Wildcats | 1939 | Screenplay |
| The Oregon Trail | 1939 | Screenplay |
| The Green Hornet | 1940 | Screenplay |
| FLASH GORDON CONQUĂŠTE DE L'UNIVERS | 1940 | Screenplay |
| Winners of the West | 1940 | Screenplay |
| Deadwood Dick | 1940 | Screenplay |
| Dead End Kids vs. Spies, Inc. | 1940 | Writer |
| Junior G-Men | 1940 | Writer |
| Pride of the Bowery | 1940 | Screenplay |
| The Green Hornet Strikes Again! | 1940 | Screenplay |
| Outlaws of the Rio Grande | 1941 | Screenplay |
| Billy The Kid's Fighting Pals | 1941 | Screenplay |
| L'araignée au Service Secret | 1941 | Writer |
| Les justiciers du désert | 1941 | Screenplay |
| The Iron Claw | 1941 | Screenplay |
| Holt of the Secret Service | 1941 | Screenplay |
| Gang Busters | 1942 | Screenplay |
| Junior G-Men of the Air | 1942 | Screenplay |
| Don Winslow of the Coast Guard | 1943 | Screenplay |
| Adventures of the Flying Cadets | 1943 | Screenplay |
| The Masked Marvel | 1943 | Screenplay |
| The Great Alaskan Mystery | 1944 | Screenplay |
| Jungle Queen | 1945 | Writer |
| Brenda Starr, Reporter | 1945 | Writer |
| The Master Key | 1945 | Screenplay |
| Trouble Chasers | 1945 | Screenplay |
| Gangster's Den | 1945 | Screenplay |
| Jungle Raiders | 1945 | Screenplay |
| Hop Harrigan: America's Ace of the Airways | 1946 | Screenplay |
| Chick Carter, Detective | 1946 | Screenplay |
| Son of the Guardsman | 1946 | Screenplay |
| Betty Co-Ed | 1946 | Screenplay |
| The Vigilante: Fighting Hero of the West | 1947 | Screenplay |
| Le Dernier des Peaux Rouges | 1947 | Screenplay |
| The Sea Hound | 1947 | Screenplay |
| Les Aventures De Superman | 1948 | Screenplay |
| Congo Bill | 1948 | Screenplay |
| Bruce Gentry | 1949 | Screenplay |
| Batman and Robin | 1949 | Screenplay |
| The Adventures of Sir Galahad | 1949 | Screenplay |
| Les Aventures de Superman : Superman contre Atom Man (L’Homme Atomique) | 1950 | Screenplay |
| Pirates of the High Seas | 1950 | Writer |
| Roar of the Iron Horse | 1951 | Screenplay |
| Mysterious Island | 1951 | Screenplay |
| King of the Congo | 1952 | Screenplay |
| Blackhawk | 1952 | Writer |
| Son of Geronimo | 1952 | Screenplay |
| The Lost Planet | 1953 | Screenplay |
| The Great Adventures of Captain Kidd | 1953 | Screenplay |
| Gunfighters of the Northwest | 1954 | Screenplay |
| Riding with Buffalo Bill | 1954 | Screenplay |
| Adventures of Captain Africa | 1955 | Screenplay |
| Jungle Jim L'Ă©nigme de la Jungle | 1955 | Writer |
| Jungle Safari | 1956 | Screenplay |
| Perils of the Wilderness | 1956 | Screenplay |
| Blazing the Overland Trail | 1956 | Screenplay |
| Sakima and the Masked Marvel | 1966 | Screenplay |
| Purple Death from Outer Space | 1966 | Writer |
