American Hanoverian Society
American Hackney Horse Society
American Mammoth Jackstock Registry (AMJR)
American Miniature Horse Association (AMHA)
American Miniature Horse Registry (AMHR)
American Morgan Horse Association (AMHA)
American Saddlebred Horse Association (ASHA)
American Shetland Pony Club
American Shire Horse Association (ASHA)
American Trekehner Association (ATA)
American Paint Horse Association (APHA)
American Quarter Horse Association (AQHA)
Appaloosa Horse Club(ApHC)
Arabian Horse Association (ARAB)
Canadian Warmblood Horse Breeders Assoc
Clydesdale Breeders of the U.S.A.
Belgian Draft Corp of America
Friesian Horse Association of North America (FHANA)
Friesian Sport Horse Registry
Gypsy Vanner Horse Society

International Curly Horse Organization
International QUARAB Horse Association (QUARABS)
Irish Draught Horse Society of North America
Lipizzan Association of North America
Kentucky Mountain Saddle Horse Association
Missouri Fox Trotting Horse Breed Assocition
North American Peruvian Horse Association
North American Single-footing Association
Missouri Fox Trotting Horse Breed Assocition
Paso Fino Horse Association
Percheron Horse Association of America
Palomino Horse Breeders of America
Pony of the Americas
Rocky Mountain Horse Association
Tennessee Walking Horse (TWBEA)
The Chincoteague Pony Association
The Shetland Pony
The Shire Horse Society
The Spanish Jennet Horse Society
The Jockey Club (Thoroughbred)
US Mangalarga Marchador Association (USMMA)
Walkaloosa Horse Association
Welsh Pony and Cob Society (WPCS)

Georgia Quearter Horse Association

NetPosse

Nevada Quarter Horse Association

Spokan Morgan Club