Rex

The Vanishing Legion

Rex

Robinson Crusoe of Clipper Island

Rex, the Wonder Horse

The Adventures of Rex and Rinty

Rex, The King of Wild Horses

Rex the Devil Horse

The Devil Horse (as Rex - King of Horses)

No Man's Law

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

The King of the Wild Horses

The Black (as Rex the Wonder Horse)

The Black Cyclone

Rex (as Rex the Wild Horse)

The Law of the Wild

Rex King of the Wild Horses

King of the Sierras

Diablo

Hoofbeats of Vengeance

Rex, the Wonder Horse

Lightning Romance

A Horse (as Rex the Wonder Horse)

Wild Blood

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

King of the Wild Horses

Rex (as Rex the Wonder Horse)

Plunging Hoofs

Rex (as Rex the Wonder Horse)

Parade of the West

Mankiller (as Rex King of the Wild Horses)

Guardians of the Wild

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

Two Outlaws

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

Stormy

Rex (as Rex King of Wild Horses)

The Harvest of Hate

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

Wild Beauty

Thunderhoof, a horse