American Heritage Horse Association: Breed Association for the foundation Spanish Mustang.
Southwest Spanish Mustang Assocaiton: Choctaw and Cherokee Spanish Mustangs
Spanish Mustang Registry:
Breeders of Spanish Mustang horses.
Rainbow’s End Farm, Virginia
Spanish Stallion UK
Laughing Coyote Ranch, Canada
Sunflower Ranch Colorado
Twin Hollows Spanish Mustangs. Minnesota
Dunsmoke, South Dakota
Star Flower Ranch, Wyoming
Zen Cowboys, MInnesota
Many Ponies, South Dakota
Cherokee Spirit Spanish Mustangs, Georgia