Images
1973 Can-Am Challenge Cup.
CanAm race. Watkins Glen, New York State, United States (USA). 21 July 1973.
Mark Donohue (Porsche 917/30KL) and George Follmer (Porsche 917/10K) lead at the start. Donohue finished in 1st position.
World Copyright: LAT Photographic
Ref: 35mm transparency 73CANAM09