1 Jim Clark wins his third straight USGP at Watkins Glen, this time driving a Lotus-Ford (1967). 2 Louis de Palma drives a Benz to victory in the Vanderbilt Cup race in Milwaukee, Wisconsin (1912). 2 Lee Petty wins his first NASCAR race in a Plymouth at the 1/2-mile Heidelburg Speedway in Pittsburgh, Pennsylvania (1949). 3 Two-time CART champion Allesandro “Alex” Zanardi is born (1969). 5 Formula One great Froilan Gonzalez is born (1922). 6 Brabhams finish 1-2, with Carlos…
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