1956 Portland NASCAR - Round 21
- Sunday, May 27, 1956
 - Portland 150
 - NASCAR Grand National
 
Circuit - Portland Speedway
Country
United States
Location
Portland, Oregon
Type
Paved oval
Length
0.5 (Miles)
            
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    Country
United States
Location
Portland, Oregon
Type
Paved oval
Length
0.5 (Miles)