Alabama Thoroughbred Breeders Racing Association

Arizona Thoroughbred Breeders Association

Arkansas Thoroughbred Breeders and Horsemens Association

California Thoroughbred Breeders Association

Thoroughbred Owners of California

Canadian Thoroughbred Horse Society

Colorado Thoroughbred Breeders Association (303) 294-0260

Delaware Thoroughbred Horsemens Association

Florida Thoroughbreds Breeders and Owners Association

Georgia Thoroughbred Owners and Breeders Association

Idaho Thoroughbred Association

Illinois Thoroughbred Breeders and Owners Foundation

Illinois Thoroughbred Horsemens Association

Indiana Thoroughbred Owners and Breeders Association

Iowa Thoroughbred Breeders and Owners Association

Kansas Thoroughbred Association

Kentucky Thoroughbred Association / Kentucky Thoroughbred Owners & Breeders

Louisiana Thoroughbred Breeders Association

Maryland Thoroughbred

Maryland Thoroughbred Horsemens Association

Massachusetts Thoroughbred Breeders Association

Michigan Thoroughbred Owners and Breeders Association

Minnesota Thoroughbred Association

Mississippi Thoroughbred Owners and Breeders Association  (601) 856-8293

Nebraska Thoroughbred Breeders Association

New England Thoroughbred Horsemens Association  (617) 567-3900

New Jersey Thoroughbred Breeders Association

New Jersey Thoroughbred Horsemens Association  (732) 263-1022

New Mexico Horse Breeders Association

North Dakota Thoroughbred Owners and Breeders Association

North Carolina Thoroughbred Association

New Mexico Horse Breeders Association

New York Thoroughbred Breeders

New York Thoroughbred Horsemens Association

North Carolina Thoroughbred Association

North Dakota Thoroughbred Owners and Breeders Association

Ohio Thoroughbred Breeders and Owners Association

Oklahoma Thoroughbred Association

Oregon Thoroughbred Owners and Breeders Association

Pennsylvania Thoroughbred Horsemens Association

South Carolina Thoroughbred Owners and Breeders Association

South Dakota Thoroughbred Association

Texas Thoroughbred Association

Virginia Thoroughbred Association

Washington Thoroughbred Breeders and Owners Association

West Virginia Thoroughbred Breeders Association