Rex

King of the Sierras

Diablo

Robinson Crusoe of Clipper Island

Rex, the Wonder Horse

Stormy

Rex (as Rex King of Wild Horses)

The Adventures of Rex and Rinty

Rex, The King of Wild Horses

The Law of the Wild

Rex King of the Wild Horses

King of the Wild Horses

Rex (as Rex the Wonder Horse)

The Vanishing Legion

Rex

Parade of the West

Mankiller (as Rex King of the Wild Horses)

The Harvest of Hate

Rex, the World's Greatest Horse (as Rex the Wonder Horse)

Hoofbeats of Vengeance

Rex, the Wonder Horse

Plunging Hoofs

Rex (as Rex the Wonder Horse)

Wild Blood

Rex, Mary's Horse (as Rex the Wonder Horse)

Two Outlaws

Rex, a Horse (as Rex King of the Wild Horses)

Guardians of the Wild

Rex - a Wild Horse (as Rex the Wonder Horse)

Wild Beauty

Thunderhoof, a horse

No Man's Law

Rex, a Wild Horse (as Rex the Wonder Horse)

The Devil Horse

The Devil Horse (as Rex - King of Horses)

The Black Cyclone

Rex (as Rex the Wild Horse)

Lightning Romance

A Horse (as Rex the Wonder Horse)

The King of the Wild Horses

The Black (as Rex the Wonder Horse)