Cast and credits of The Vanishing Legion

B. Reeves Eason

Ford Beebe

Harry Carey
Happy Cardigan

Edwina Booth
Caroline Hall

Rex the Wonder Horse
Rex (as Rex King of Wild Horses)

William Desmond
Milesburg Sheriff

Frankie Darro
Jimmie Williams

Philo McCullough
Stevens

Yakima Canutt
Yak [Chs. 1 & 3] / Bill Peters [Ch. 4]

Joe Bonomo
Stuffy

Lafe McKee
T.J. Hornbeck

Bob Kortman
Henchman Marno

Edward Hearn
Jed Williams

Paul Weigel
Oil Co. Director Larribee

Frank Brownlee
Oil Co. Director Bishop

Olive Carey
Nurse Lewis [Chs. 9-12] (as Olive Fuller Golden)

Robert Walker
Oil Co. Director Allen (as Bob Walker)

Pete Morrison
Oil Worker Brady / Crooked Deputy [Ch. 6]

Boris Karloff
The Voice (voice) (uncredited)

Tracy Layne
Horseman [Ch. 1] / Oil Worker [Chs. 2 / 11-12] (uncredited)

Cliff Lyons
Deputy O'Brien [Ch. 1] / Wrangler Slim [Ch.1] / Shorty [Ch. 2] / Henchman [Ch. 4] (uncredited)

Walter Miller
Narrator of Opening Chapter Recaps (voice) (uncredited)

Bob Reeves
Henchman (uncredited)

Bill Wolfe
Townsman (uncredited)

Ford Beebe
(original screenplay)