Katahdin (1999-2011)
Virginia Thoroughbred Association
Virginia Horseman's Association
Virginia Tech M.A.R.E. Center
Colonial Downs
Thoroughbred Owners and Breeders Association
The Jockey Club
Jockey Club Interactive Registry
Thoroughbred Times
Bloodhorse
Virginia Equestrian
Thoroughbred Pedigree Database
Horse Pedigree Database
Performance Horse Registry Awards
Appaloosa Horse Club
Arabian Horse Association
American Quarterhorse Association
American Paint Horse Association
Untied States Equestrian Federation
United States Equestrian Rescue League
