Rex

1930s

1. 1938

   King of the Sierras

   Diablo

2. 1936

   Robinson Crusoe of Clipper Island

   Rex, the Wonder Horse

3. 1935

   Stormy

   Rex (as Rex King of Wild Horses)

4. The Adventures of Rex and Rinty

   Rex, The King of Wild Horses

5. 1934

   The Law of the Wild

   Rex King of the Wild Horses

6. 1933

   King of the Wild Horses

   Rex (as Rex the Wonder Horse)

7. 1931

   The Vanishing Legion

   Rex

8. 1930

   Parade of the West

   Mankiller (as Rex King of the Wild Horses)

1920s

1. 1929

   The Harvest of Hate

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

2. Hoofbeats of Vengeance

   Rex, the Wonder Horse

3. Plunging Hoofs

   Rex (as Rex the Wonder Horse)

4. Wild Blood

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

5. 1928

   Two Outlaws

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

6. Guardians of the Wild

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

7. 1927

   Wild Beauty

   Thunderhoof, a horse

8. No Man's Law

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

9. 1926
   

   Rex the Devil Horse

   The Devil Horse (as Rex - King of Horses)

10. 1925

    The Black Cyclone

    Rex (as Rex the Wild Horse)

11. 1924

    Lightning Romance

    A Horse (as Rex the Wonder Horse)

12. The King of the Wild Horses

    The Black (as Rex the Wonder Horse)