Ralph Cunningham Hamlin
Birthplace: San Francisco, California
Born: October 17, 1880
Died: July 5, 1974
Ralph Hamlin
Ralph Cunningham Hamlin
Birthplace: San Francisco, California
Born: October 17, 1880
Died: July 5, 1974
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| Track | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| LA-Phoenix | Relief | drove | only | ||||||
| Portland-1909 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 |
| Santa Monica | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 7 | 0 |
| Chassis | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Franklin | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 |
| Engine | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Franklin | 2 | 0 | 0 | 0 | 0 | 0 | 0 | 6 | 0 |