Wednesday, July 27, 2011

Ontario Motor Speedway circa 1975

It's probably changed by now but here is a vintage map / diagram of Ontario Motor Speedway back in 1975. This vintage ad is for the Champion Spark Plug Motorcycle Classics at Ontario Oct. 4,5, 1975.

1975 Champion Spark Plug Motorcycle Classics at Ontario Motor Speedway Oct. Ad available at www.DadsVintageAds.com













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