| Year | Winner | Grand Prix | Race Start |
|---|---|---|---|
| 1956 |
Chapman S Root
? 1956 Pat O'connor |
Darlington Indycars | 4th July 1956 |
| Name | Wins | Poles | Points |
|---|---|---|---|
| Pat O'connor | 1 | 0 | 400 |
| Name | Wins | Poles | Points |
|---|---|---|---|
| Chapman S Root | 1 | 0 | 400 |
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