Koko

Phantom Stallion

Rex's Horse

1954

Red River Shore

Rex's Horse

1953

Shadows of Tombstone

Rex's Horse

1953

Down Laredo Way

Koko, Rex's Horse (as Koko the Miracle Horse of the Movies)

1953

Iron Mountain Trail

Koko

1953

Old Overland Trail

Rex's Horse

1953

South Pacific Trail

Koko

1952

Old Oklahoma Plains

Koko

1952

Border Saddlemates

Koko - Rex's Horse

1952

The Last Musketeer

Koko

1952

Colorado Sundown

Miracle Horse of the Movies

1952

Utah Wagon Train

Koko, Rex Allen's Horse (as Koko the Miracle Horse of the Movies)

1951

Rodeo King and the Senorita

Koko - Rex's Horse

1951

Hills of Oklahoma

Rex Allen's Horse (as The Miracle Horse of the Movies)

1950

Typhoon

Koko

1940