These photos are from a Formula 5000 race at Riverside International Raceway in 1974, the Riverside Grand Prix. Jame Hunt is pictured in the pits, but he would retire from the race due to mechanical issues with his Eagle 755. Mario Andretti took the win behind the wheel of a Lola T332. Local race fan John Mensinger was in attendance and took these great candid photos.
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Photos by John Mensinger via Daniel Mensinger
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