Turist Modstander radar geoff duke universitetsstuderende Forsøg Kammerat
Geoff Duke dead at 92 | Adventure Rider
British Racing Drivers' Club
Geoff Duke obituary | Motorcycling | The Guardian
Geoff Duke: Motorcyclist known as 'The Iron Duke' who dominated his sport in the 1950s, winning six world titles in five years | The Independent | The Independent
Geoff Duke OBE | MotoGP Legend | 29 March 1923 – 1 May 2015 - YouTube
Geoff Duke on a Featherbed Norton - Classic Racer
Geoff Duke: Racing superstar of the 1950s dies aged 92 - BBC Sport
Multiple World Champion Geoff Duke Dies Aged 92 - autoevolution