George H. Plympton

Superman

Screenplay

Jungle Raiders

Screenplay

Flash Gordon Conquers the Universe

Screenplay

Flash Gordon

Screenplay

Batman and Robin

Screenplay

Winners of the West

Screenplay

The Spider's Web

Screenplay

Junior G-Men

Writer

Blackhawk

Writer

Don Winslow of the Coast Guard

Screenplay

The Green Hornet

Screenplay

Mysterious Island

Screenplay

Jungle Queen

Writer

Spaceship to the Unknown

Writer

Pride of the Bowery

Screenplay

The Phantom Creeps

Screenplay

The Great Adventures of Captain Kidd

Screenplay

Gangster's Den

Screenplay

The Red Rider

Screenplay

Gunfighters of the Northwest

Screenplay

The Masked Marvel

Screenplay

The Great Alaskan Mystery

Screenplay

Perils of the Wilderness

Screenplay

Stormy

Writer

The Lost Planet

Screenplay

The Green Hornet Strikes Again!

Screenplay

The Feud Maker

Screenplay

The Oregon Trail

Screenplay

Riders of Death Valley

Screenplay

Tarzan the Fearless

Writer

Son of Geronimo

Screenplay

Rocket Ship

Screenplay

Perils of Pauline

Screenplay

Junior G-Men of the Air

Screenplay

Texas Wildcats

Screenplay

Billy The Kid's Fighting Pals

Screenplay

Roar of the Iron Horse

Screenplay

Perils of the Yukon

Writer

Outlaws of the Rio Grande

Screenplay

Atom Man vs. Superman

Screenplay

Songs and Bullets

Screenplay

Adventures of the Flying Cadets

Screenplay

The Devil Horse

Writer

Bruce Gentry

Screenplay

Blazing Days

Writer

A Lawman Is Born

Writer

Dead End Kids vs. Spies, Inc.

Writer

The Spider Returns

Writer

The Last Frontier

Screenplay

Pirate Treasure

Screenplay

Smoky Trails

Screenplay

Riding with Buffalo Bill

Screenplay

Scouts to the Rescue

Screenplay

Brenda Starr, Reporter

Writer

Whirlwind Horseman

Screenplay

Purple Death from Outer Space

Writer

The Vigilante: Fighting Hero of the West

Screenplay

The Roaring West

Writer

Congo Bill

Screenplay

Jungle Mystery

Screenplay

The Phantom Creeps

Screenplay

Last of the Redmen

Screenplay

Devil Goddess

Writer

Hop Harrigan: America's Ace of the Airways

Screenplay

Thunder in the Desert

Screenplay

The Idaho Kid

Screenplay

Adventures of Captain Africa

Screenplay

The Phantom of the Air

Screenplay

The One Way Trail

Screenplay

The Adventures of Sir Galahad

Screenplay

Hoofbeats of Vengeance

Screenplay

Durango Valley Raiders

Screenplay

Rustlers of Red Dog

Screenplay

The Iron Claw

Screenplay

Man Trackers

Writer

Doomed at Sundown

Screenplay

Holt of the Secret Service

Screenplay

Martin of the Mounted

Writer

The Satin Girl

Writer

Son of the Guardsman

Screenplay

The Harvest of Hate

Writer

Chick Carter, Detective

Screenplay

The Stolen Ranch

Writer

The Sea Hound

Screenplay

Flaming Frontiers

Screenplay

That Girl Montana

Writer

Sakima and the Masked Marvel

Screenplay

The Trusted Outlaw

Screenplay

Boothill Brigade

Writer

Blazing the Overland Trail

Screenplay

Burning the Wind

Writer

Deadwood Dick

Screenplay

Betty Co-Ed

Screenplay

With Stanley in Africa

Screenplay

Arizona Gunfighter

Screenplay

Jungle Safari

Screenplay

Paroled from the Big House

Writer

Gun Lords of Stirrup Basin

Screenplay

Trigger Pals

Writer

Pirates of the High Seas

Writer

Peril from the Planet Mongo

Writer

The Courage of Collins

Writer

The Vanishing Rider

Writer

The Phantom Rider

Screenplay

Trouble Chasers

Screenplay

The Master Key

Screenplay

Gang Busters

Screenplay

The Menace

Writer

Hard Fists

Writer

King of the Congo

Screenplay

Paroled - To Die

Screenplay

One Glorious Scrap

Writer

The Shop Girl

Writer

The Crooked Trail

Screenplay

The Rangers' Round-Up

Writer

Help Wanted - Male

Writer

The Texas Bearcat

Writer

Thru the Flames

Writer

The Deputy's Double Cross

Writer

The Wooing of Princess Pat

Writer

The Nuremberg Watch

Writer

Heroes of the Flames

Screenplay

Miss Ambition

Writer