George H. Plympton

Screenplay

Sakima and the Masked Marvel

Writer

Purple Death from Outer Space

Writer

Spaceship to the Unknown

Story

Zombies of Mora Tau

Screenplay

Blazing the Overland Trail

Story

Blazing the Overland Trail

Story

Perils of the Wilderness

Screenplay

Perils of the Wilderness

Screenplay

Jungle Safari

Screenplay

Adventures of Captain Africa

Story

Adventures of Captain Africa

Writer

Devil Goddess

Story

Riding with Buffalo Bill

Screenplay

Riding with Buffalo Bill

Screenplay

Gunfighters of the Northwest

Story

Gunfighters of the Northwest

Screenplay

The Lost Planet

Screenplay

The Great Adventures of Captain Kidd

Screenplay

King of the Congo

Story

Son of Geronimo

Screenplay

Son of Geronimo

Writer

Blackhawk

Screenplay

Mysterious Island

Screenplay

Roar of the Iron Horse

Screenplay

Atom Man vs. Superman

Writer

Pirates of the High Seas

Story

Cody of the Pony Express

Screenplay

Batman and Robin

Screenplay

The Adventures of Sir Galahad

Screenplay

Bruce Gentry

Screenplay

The Phantom Creeps

Story

Tex Granger: Midnight Rider of the Plains

Screenplay

Congo Bill

Screenplay

Superman

Screenplay

The Sea Hound

Screenplay

Last of the Redmen

Screenplay

The Vigilante: Fighting Hero of the West

Story

Jack Armstrong

Screenplay

Betty Co-Ed

Screenplay

Son of the Guardsman

Screenplay

Chick Carter, Detective

Screenplay

Hop Harrigan: America's Ace of the Airways

Screenplay

Jungle Raiders

Writer

Jungle Queen

Screenplay

The Master Key

Screenplay

Trouble Chasers

Story

Gangster's Den

Screenplay

Gangster's Den

Writer

Brenda Starr, Reporter

Screenplay

The Great Alaskan Mystery

Screenplay

The Masked Marvel

Screenplay

Adventures of the Flying Cadets

Screenplay

Don Winslow of the Coast Guard

Screenplay

Junior G-Men of the Air

Screenplay

Gang Busters

Screenplay

The Iron Claw

Screenplay

Riders of Death Valley

Story

Billy The Kid's Fighting Pals

Screenplay

Billy The Kid's Fighting Pals

Screenplay

Outlaws of the Rio Grande

Screenplay

Holt Of The Secret Service

Writer

The Spider Returns

Story

Trailing Double Trouble

Screenplay

Winners of the West

Screenplay

Pride of the Bowery

Writer

Junior G-Men

Screenplay

Deadwood Dick

Screenplay

The Green Hornet

Writer

Dead End Kids vs. Spies, Inc.

Screenplay

Flash Gordon Conquers the Universe

Screenplay

The Green Hornet Strikes Again!

Screenplay

The Phantom Creeps

Story

Feud of the Range

Screenplay

The Oregon Trail

Story

Mesquite Buckaroo

Screenplay

Scouts to the Rescue

Story

Smoky Trails

Screenplay

Smoky Trails

Story

Texas Wildcats

Screenplay

Texas Wildcats

Writer

Trigger Pals

Screenplay

Whirlwind Horseman

Story

Thunder in the Desert

Screenplay

The Feud Maker

Screenplay

The Spider's Web

Screenplay

Flaming Frontiers

Screenplay

Durango Valley Raiders

Screenplay

Paroled - To Die

Screenplay

Thunder in the Desert

Story

Songs and Bullets

Screenplay

Songs and Bullets

Writer

Paroled from the Big House

Screenplay

Rocket Ship

Writer

The Rangers' Round-Up

Adaptation

Trail of Vengeance

Story

The Gambling Terror

Adaptation

The Gambling Terror

Screenplay

Arizona Gunfighter

Writer

Boothill Brigade

Screenplay

Gun Lords of Stirrup Basin

Writer

A Lawman Is Born

Adaptation

The Red Rope

Screenplay

Doomed at Sundown

Screenplay

The Trusted Outlaw

Adaptation

Bar-Z Bad Men

Screenplay

Flash Gordon

Screenplay

The Phantom Rider

Adaptation

The Gun Ranger

Screenplay

The Idaho Kid

Adaptation

Cavalry

Story

The Crooked Trail

Screenplay

The Crooked Trail

Screenplay

Rustlers of Red Dog

Writer

The Roaring West

Writer

Stormy

Screenplay

Pirate Treasure

Screenplay

The Red Rider

Writer

Tarzan the Fearless

Adaptation

Gordon of Ghost City

Screenplay

The Phantom of the Air

Screenplay

Perils of Pauline

Writer

The Devil Horse

Continuity

Love Bound

Screenplay

The Last Frontier

Screenplay

The One Way Trail

Writer

The Harvest of Hate

Screenplay

Hoofbeats of Vengeance

Writer

Burning the Wind

Story

Born to the Saddle

Writer

The Vanishing Rider

Writer

Hard Fists

Writer

Blazing Days

Scenario Writer

Fighting Spirit

Writer

The Stolen Ranch

Writer

Martin of the Mounted

Writer

The Deputy's Double Cross

Story

Never Let Go

Writer

Perils of the Yukon

Writer

That Girl Montana

Writer

Man Trackers

Story

Who Was the Man?

Story

Double Crossers

Scenario Writer

The Wild Wild West

Scenario Writer

The Adventure Shop

Scenario Writer

The Wild Strain

Scenario Writer

The Home Trail

Scenario Writer

The Alibi

Writer

The Shop Girl