Year | Winner | Grand Prix | Race Start |
---|---|---|---|
1915 |
Duesenberg
? 1915 Ralph Mulford |
Des Moines 300 | 7th August 1915 |
1916 |
![]() Mercedes-Benz 115 hp Grand Prix Ralph de Palma |
Des Moines 150 | 24th June 1916 |
Name | Wins | Poles | Points |
---|---|---|---|
Ralph de Palma | 1 | 1 | 920 |
Ralph Mulford | 1 | 1 | 635 |
Name | Wins | Poles | Points |
---|
Mercedes-Benz 115 hp Grand Prix
Mercedes
Duesenberg
Stutz
Hudson
Stutz
Wisconsin
White
Duesenberg
unknown
Duesenberg
Maxwell
Brown
Sunbeam