The following are some links to sites of interest around the world...

AMC Schleizer Dreieck - English Version Click Here

American Historic Racing Motorcycle Association - AHRMA

Classic Racing Motorcycle Club

Classic Racing Motorcycle Club of Belgium

Historic Racing Motorcycle Association of Victoria

International Classic Grand Prix

International Historic Racing Organization

French Norton Club

Grab the Flag

Lansdowne Classic Series

Mettet Club

Morini Riders Club

Pilotes de Vitesse en Motos Anciennes

Trophée d'Endurance Classic

VMCC Sprint section

USCRA. Home Page

ZV-Motor-Wien

BDK Engineering

Britten

Crooks Suzuki

Godet-Motorcycles

Jim Blanchard. Motorcycle Artist

Motobi-Zanzani Vintage Roadracers

Personal Cycle Services Daytona

Molnar Precision

Ragged Edge Racing

Vee Two

Becks Motor Werkplaats

Bjorne Pedersen's Homepage

Chris Chapman Racing

RG500 Club de France

George Cohen Norton

Lump Proof

Michelle Duff’s Homepage

Ronnie Cramer's Motorcycle Web

Rutger Stoop 

Suzuki T20 racing enthusiast

Team Obsolete

Ton Up Club

Teamecanic

Waddon

Useful Motorcycle search engine  

Benzina Italian Magazine

Bolide Classic Cars + Motorsport

If you know of any other sites that are of relevant interest please contact TGA.