I think you probably already know what my opinion is.
19s in the Northeast are an accident (or at least a bent rim) waiting to happen.
Drivers Club at Lime Rock
The Glen Club
International Motor Racing Research Center
Cayman Club Nor'Easters
Madison Ave. Sports Car Driving and Chowder Society (Only a Vice President)
Sports Car Club of America
Polish Racing Drivers of America (PRDA)
American Mural Project
Simeone Foundation Automotive Museum
Mount Washington Observatory
Society of Automotive Historians