S. F. Brock
S. Frank Brock
Birthplace: Wisconsin
Born:
Died: 1918
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| Date | Track | Type | Driver | Car # | Sponsor/Name | Chassis | Engine | Start | Finish | Laps | Status |
| 8/30/1912 | Elgin 1 | RC | Spencer Wishart | 35 | Mercer | Mercer | Mercer | 5 | 6 | 13 | Sprung rear axle |
| 8/30/1912 | Elgin 4 | RC | Spencer Wishart | 14 | Mercer | Mercer 35C | Mercer | X | 7 | 24 | Broken water pump |
| 10/2/1912 | Milwaukee 1 | RC | Spencer Wishart | 26 | Mercedes | Mercedes | Mercedes | 5 | 3 | 38 | 4:36:35.75 64.955 |
| 10/5/1912 | Milwaukee 2 (NC) | RC | Spencer Wishart | 36 | Mercedes | Mercedes | Mercedes | 6 | 11 | 3 | Broken drive shaft |
| 10/5/1912 | Milwaukee 3 | RC | Spencer Wishart | 14 | Mercer | Mercer | Mercer | 3 | 6 | 14 | Broken crankshaft |