 | American Indian Horse Registry
Devoted to registering mustangs and Colonial Spanish Horses and active in sponsering competitive and fun events for members. Includes breed description, history, show rules, awards, and photos. |
 | American Kiger Horse Registry, Inc.
For horses which have one or more ancestors that originated from either the Kiger Herd Management Area or the Riddle Herd Management Area. Includes information about the registry, fees, and classified advertisements. |
 | Horse of the Americas (HOA)
An umbrella registry for all Colonial Spanish Horses. The HOA accepts horses from the Spanish Mustang Registry, the American Indian Horse Registry, and other strains identified as Colonial Spanish. |
 | Northeast Wisconsin Mustang and Burro Association
A club dedicated to those who have a love of these animals. Includes breed information, horses for sale, forum, award information, and photos. |
 | Sorraia Mustang Studbook/Magazine
Information about the Sorraia Mustang and its studbook, including breed magazine. The Sorraia Horse is one of the original Iberian horses from which Colonial Spanish Horses (Mustangs) derived. |
 | Southwest Spanish Mustang Association
Formed by breeders who seek to preserve, promote, and enjoy the pure line of Spanish Mustangs. Contains list of breeders, articles, registration information, coat colors, and photos. |
 | Southwest Spanish Mustang Association
A nonprofit organization dedicated to the preservation of the horses which populated the United States in early colonial times. |
 | Spanish Mustang Registry Home Page
Learn about the rich heritage, unique colors and markings of this fine breed. |
 | Steens Mountain Kiger Registry
Registy for the Kiger Mustang from Steens Mountain. Includes a newsletter, FAQ page, and online studbook. |
 | Sulphur Horse Registry
Registry founded in 1998 for the purpose of preserving and promoting the Sulphur Springs Mustang and its domestic progeny. |
