Mitchell Albert Siemienski
Birthplace: Philadelphia, Pennsylvania
Born: August 11, 1911
Died: June 22, 1941
Metz Simins
Mitchell Albert Siemienski
Birthplace: Philadelphia, Pennsylvania
Born: August 11, 1911
Died: June 22, 1941
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| Track | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Langhorne | Non | points | races | only |
| Chassis | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Unknown | Non | points | races | only |
| Engine | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| HAL | Non | points | race | only | |||||
| Unknown | Non | points | race | only |