Participants 1955 C300: Charles Schoendorf 1956 300 B: Peter Kearing 1957 300 C: Jack Child 1958 300 D: Len Worden 1959 300 E: David Larson 1960 300 F: Danny Plotkin 1961 300 G: PJ Ehmann 1964 300 K: Len Worden 1965 300 L: Hank Hallowell