Phantom Stallion
1954 · Rex's Horse
Red River Shore
1953 · Rex's Horse
Shadows of Tombstone
1953 · Rex's Horse
Down Laredo Way
1953 · Koko, Rex's Horse (as Koko the Miracle Horse of the Movies)
Iron Mountain Trail
1953 · Koko
Old Overland Trail
1953 · Rex's Horse
South Pacific Trail
1952 · Koko
Old Oklahoma Plains
1952 · Koko
Border Saddlemates
1952 · Koko - Rex's Horse
The Last Musketeer
1952 · Koko
Colorado Sundown
1952 · Miracle Horse of the Movies
Utah Wagon Train
1951 · Koko, Rex Allen's Horse (as Koko the Miracle Horse of the Movies)
Rodeo King and the Senorita
1951 · Koko - Rex's Horse
Hills of Oklahoma
1950 · Rex Allen's Horse (as The Miracle Horse of the Movies)
Typhoon
1940 · Koko
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