Associations and Groups
- United States Trotting Association
- Michigan Association of Fairs and Exhibitions
- Ohio Harness Horsemen’s Association
- Indiana Standardbred Association
- Illinois Harness Horsemen’s Association
- Canadian Harness Racing
- Pennsylvania Harness Horsemen’s Association
- Kentucky Harness Horsemen’s Association
Fairs and Exhibitions
- Allegan County Fair (Allegan)
- Barry County Fair (Hastings)
- Clare County Fair (Harrison)
- Eaton County Fair (Charlotte)
- Fowlerville Family Fair (Fowlerville)
- Gratiot Agricultural Society (Ithaca)
- Chippewa County Fair (Kinross)
- Midland County Fair (Midland)
- Mecosta Free Fair (Big Rapids)
- Oceana County Fair (Hart)
- St. Joseph County Grange Fair (Centreville)
Horse Racing Regulation