William Campbell
William S. Campbell
Birthplace: Versailles, Missouri
Born: 1881 or 1882
Died: September 29, 1917
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| Track | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| San Diego | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 11 | 0 |
| San Diego-Point Loma | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| Chassis | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Buick | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| Engine | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Buick | 2 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |