| 1974 | The Three Stooges Follies | Writer |
| 1957 | Zombies of Mora Tau | story |
| 1956 | Savage Fury | screenplay |
| 1956 | Blazing the Overland Trail | story |
| 1956 | Jungle Safari | screenplay |
| 1956 | Perils of the Wilderness | story |
| 1955 | Adventures of Captain Africa: Mighty Jungle Avenger! | screenplay |
| 1955 | Devil Goddess | screen play |
| 1954 | Gunfighters of the Northwest | story |
| 1954 | Riding with Buffalo Bill | story |
| 1953 | The Great Adventures of Captain Kidd | story |
| 1953 | The Lost Planet | story and screenplay |
| 1952 | Blackhawk: Fearless Champion of Freedom | written for the screen by |
| 1952 | King of the Congo | written for the screen by |
| 1952 | Son of Geronimo: Apache Avenger | story |
| 1951 | Mysterious Island | screenplay |
| 1951 | Roar of the Iron Horse - Rail-Blazer of the Apache Trail | written for the screen by |
| 1950 | Pirates of the High Seas | written for the screen by |
| 1950 | Cody of the Pony Express | story |
| 1949 | The Adventures of Sir Galahad | original screenplay |
| 1949 | Bruce Gentry | original screenplay |
| 1948 | Manhattan Angel | story |
| 1948 | Superman | adaptation |
| 1948 | Congo Bill | screenplay |
| 1947 | The Vigilante: Fighting Hero of the West | screenplay |
| 1947 | The Sea Hound | screenplay |
| 1947 | Brick Bradford | screenplay |
| 1947 | Last of the Redmen | screenplay |
| 1947 | Jack Armstrong | story treatment |
| 1946 | Betty Co-Ed | original screenplay |
| 1946 | Hop Harrigan America's Ace of the Airways | original screenplay |
| 1946 | Chick Carter, Detective | original screenplay |
| 1946 | Son of the Guardsman | original screenplay |
| 1945 | Trouble Chasers | original story |
| 1945 | Brenda Starr, Reporter | original screenplay |
| 1945 | Gangster's Den | original story |
| 1945 | Jungle Queen | original screenplay |
| 1945 | Jungle Raiders | original screenplay |
| 1945 | The Master Key | screenplay |
| 1945 | Who's Guilty? | original screenplay |
| 1944 | The Great Alaskan Mystery | screenplay |
| 1943 | Adventures of the Flying Cadets | screenplay |
| 1943 | Don Winslow of the Coast Guard | screenplay |
| 1942 | Junior G-Men of the Air | original screenplay |
| 1942 | Overland Mail | screenplay |
| 1942 | Riders of Death Valley | screenplay |
| 1942 | Captain Midnight | screenplay |
| 1942 | Gang Busters | original screenplay |
| 1941 | The Iron Claw | screenplay |
| 1941 | Billy the Kid's Fighting Pals | story and screenplay |
| 1941 | Riders of Death Valley | screenplay |
| 1941 | Outlaws of the Rio Grande | original screenplay |
| 1941 | Holt of the Secret Service | original screenplay |
| 1940 | The Green Hornet Strikes Again! | screenplay |
| 1940 | Flash Gordon Conquers the Universe | screenplay |
| 1940 | Deadwood Dick | screenplay |
| 1940 | The Green Hornet | screenplay |
| 1940 | Pride of the Bowery | screenplay |
| 1940 | Winners of the West | original screenplay |
| 1940 | Trailing Double Trouble | original story |
| 1940 | Junior G-Men | original screenplay |
| 1939 | Smoky Trails | story and screenplay |
| 1939 | Trigger Pals | original story |
| 1939 | Daughter of the Tong | story |
| 1939 | Feud of the Range | story |
| 1939 | Mesquite Buckaroo | story and screenplay |
| 1939 | The Oregon Trail | original screenplay |
| 1939 | The Phantom Creeps | screenplay |
| 1939 | Scouts to the Rescue | screenplay |
| 1939 | Texas Wildcats | original story and screenplay |
| 1938 | Flaming Frontiers | original story |
| 1938 | Durango Valley Raiders | screenplay |
| 1938 | Rocket Ship | screenplay |
| 1938 | Whirlwind Horseman | screenplay |
| 1938 | Thunder in the Desert | original story |
| 1938 | The Spider's Web | screenplay |
| 1938 | Songs and Bullets | adaptation |
| 1938 | The Rangers' Round-Up | original story and screenplay |
| 1938 | Paroled - To Die | screenplay |
| 1938 | Paroled from the Big House | story: He Killed a Cop |
| 1938 | The Feud Maker | screenplay |
| 1937 | Doomed at Sundown | screenplay |
| 1937 | Bar-Z Bad Men | adaptation and screenplay |
| 1937 | The Trusted Outlaw | screenplay |
| 1937 | Trail of Vengeance | adaptation and screenplay |
| 1937 | The Red Rope | screen adaptation |
| 1937 | A Lawman Is Born | Writer |
| 1937 | Boothill Brigade | screen adaptation |
| 1937 | Gun Lords of Stirrup Basin | screenplay and adaptation |
| 1937 | The Gambling Terror | original story |
| 1937 | Arizona Gunfighter | screenplay and adaptation |
| 1936 | The Phantom Rider | story and screenplay |
| 1936 | The Crooked Trail | original story and screenplay |
| 1936 | The Gun Ranger | adaptation |
| 1936 | The Adventures of Frank Merriwell | screenplay |
| 1936 | Cavalry | screen adaptation |
| 1936 | Flash Gordon | screenplay |
| 1936 | Idaho Kid | screenplay |
| 1935 | The Call of the Savage | screenplay |
| 1935 | The Roaring West | screenplay |
| 1935 | Rustlers of Red Dog | screenplay |
| 1935 | Stormy | screenplay |
| 1934 | Pirate Treasure | screenplay |
| 1934 | The Red Rider | screenplay |
| 1933 | Gordon of Ghost City | screenplay |
| 1933 | The Phantom of the Air | screenplay |
| 1933 | Tarzan the Fearless | continuity |
| 1933 | Perils of Pauline | screenplay |
| 1932 | The Devil Horse | writer |
| 1932 | The Airmail Mystery | Writer |
| 1932 | The Black Ghost | Writer |
| 1932 | Heroes of the West | continuity |
| 1932 | The Last Frontier | screenplay |
| 1932 | The Lost Special | screenplay |
| 1932 | Love Bound | continuity |
| 1929 | The Smiling Terror | writer |
| 1929 | Grit Wins | writer |
| 1929 | Born to the Saddle | story |
| 1928 | Beauty and Bullets | scenario |
| 1928 | Put 'Em Up | story |
| 1927 | Hands Off | Writer |
| 1925 | Blood and Steel | written by |
| 1925 | The Range Terror | scenario |
| 1924 | The Fast Express | story |
| 1924 | Western Fate | screenplay |
| 1923 | The Steel Trail | story |
| 1923 | Thru the Flames | scenario |
| 1923 | The Satin Girl | adaptation |
| 1921 | The Man Trackers | scenario |
| 1921 | The Alarm | screenplay |
| 1921 | Terror Trail | screenplay |
| 1920 | A Broadway Cowboy | scenario |
| 1918 | The Wooing of Princess Pat | scenario |
| 1918 | The Menace | writer |
| 1918 | The Wild Strain | scenario |
| 1918 | The Blind Adventure | writer |
| 1918 | The Little Runaway | scenario |
| 1918 | The Home Trail | scenario |
| 1918 | The Fifth Wheel | scenario |
| 1917 | When Men Are Tempted | scenario |
| 1917 | The Tenderfoot | scenario |
| 1917 | Dead Shot Baker | scenario |
| 1917 | Soldiers of Chance | scenario |
| 1917 | The Question | scenario |
| 1916 | The Mysterious Motor Car | Writer |
| 1916 | The Scarlet Runner | scenario |
| 1916 | The Jacobean House | Writer |
| 1916 | The Red Whiskered Man | Writer |
| 1916 | The Hidden Prince | Writer |
| 1916 | The Gold Cigarette Case | Writer |
| 1916 | The Glove and the Ring | Writer |
| 1916 | The Car and the Girl | Writer |
| 1916 | The Lost Girl | Writer |
| 1916 | The Missing Chapter | Writer |
| 1915 | Save the Coupons | story |
| 1915 | Burglarious Billy | Writer |
| 1914 | A Costume Piece | story |
| 1914 | The Evolution of Percival | Writer |
| 1914 | Rainy, the Lion Killer | scenario |
| 1914 | The Locked Door | scenario |
| 1914 | Miser Murray's Wedding Present | scenario |
| 1914 | The Senator's Brother | scenario |
| 1912 | Mrs. Carter's Necklace | scenario |