UNITED STATES SPEEDWAY NATIONALS
1991 United States National Speedway Championship
| Costa Mesa Speedway | |||
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| October 12, 1991 | |||
| Results Below | |||
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| Cycle News Results | |
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| Costa Mesa Speedway | |||
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| October 12, 1991 | |||
| Results Below | |||
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| Cycle News Results | |
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