Classic Travelling

Worldwide motoring tours for vintage, classic and sports cars.
http://www.classictravelling.com

Octane Magazine

the magazine for the world's best classic and performance cars.
http://www.octane-magazine.com

Vintage Sports-Car Club

Sporting Motor Club celebrating Pre-war Cars.
http://www.vscc.co.uk

HGPCA

The International Association For Owners And Drivers Of Historic Grand Prix Cars.
http://www.hgpca.net