Harold Charles MacDonald, Jr.
Birthplace: Windsor, Ontario
Born: September 27, 1940
Died:
Harry MacDonald
Harold Charles MacDonald, Jr.
Birthplace: Windsor, Ontario
Born: September 27, 1940
Died:
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| Track | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Indianapolis | 0 | 2 | 0 | 0 | 0 | 0 | 0 | NS | 0 |
| Mid-Ohio | 0 | 1 | 0 | 0 | 0 | 0 | 0 | NS | 0 |
| MIS | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 21 | 0 |
| Pocono | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 |
| Chassis | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Lola | 2 | 2 | 0 | 0 | 0 | 0 | 1 | 0 | |
| SEA | 0 | 1 | 0 | 0 | 0 | 0 | 0 | NS | 0 |
| Engine | Starts | DNS/DNQ | Wins | 2nds | 3rds | 4ths | 5ths | Best Finish | Poles |
| Cosworth | 2 | 3 | 0 | 0 | 0 | 0 | 1 | 0 |