| CVAR, Corinthian
Vintage Auto Racing |
| HSR, Historic Sports
Car Racing |
| IVR,
Intermountain Vintage Racing |
| NRI,
Nostalgia Racing Incorporated |
| RMVR,
Rocky Mountain Vintage Racing |
| SCCA, Sports Car Club of
America |
| SOVERN,
The Society of Vintage Racing Enthusiasts |
| SVRA,
Sportscar Vintage Racing Association |
| SWMS,
SouthWest Motor Sport Association |
| VARA, Vintage Auto Racing Association |
| VARAC,
Vintage Automobile Racing Association of Canada |
| VDCA, Vintage Drivers Club of
America |
| VMC,
Vintage Motorsports Council |
| VSCDA,
Vintage Sportscar Drivers Association |