Mark Donohue's Porsche 917/10K

Jerry Grant's McLaren M8F

Milt Minter's Porsche 917/10

George Follmer's Porsche 917/10K

Peter Revson's McLaren M20 retires.

Peter Revson walks back to the pits after retiring.

Tom Heyser's ex-Jackie Stewart Lola T-260

Milt Minter's Vasek Polak Posche 917/10

Jackie Oliver's UOP Shadow Mk. 3

Jerry Grant's US Racing McLaren M8F