Abbreviations and/or Terms associated with Miniature Horses
American Driving Society
ADT Arena Driving Trial
ASPC American Shetland Pony Club - Oldest registry for minis
CDE Combined Driving Event - includes cones, hazards and dressage
Darby Miniature Horses competing in ones and hazards (like a CDE), with no dressage.
FEI Federal Equestre International
HDT Horse Driving Trial (dressage, cone and obstacles but no marathon)
HOF Hall of Fame
IMHR International Miniature Horse Registry - merged with AMHA
PtHA Pinto Horse Association of America - color registry, includes a variety of breeds, a variety of sizes, they have a division for horses, one for ponies and one for miniature horses
VSE Very Small Equine - includes Miniature Horses, Miniature Donkeys, Miniature Mule, any equine under 39"