Hoofbeats of Vengeance

Rex, the Wonder Horse

Lightning Romance

A Horse (as Rex the Wonder Horse)

The King of the Wild Horses

The Black (as Rex the Wonder 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)

Wild Blood

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

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)