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73 — The r/NASCAR Historian
NASCAR Classic Races: 1973 Southern 500 in 4K - YouTube
NASCAR Car Number 73 - driveraverages.com
NASCAR In 1973 — The 75 Years Edition - SPEED SPORT
Category:Number 73 on racing cars - Wikimedia Commons
1973 Datsun 240Z Race Car - Hagerty Media
Eagle 1973 Indy car-by-car histories - OldRacingCars.com
10 Tall Tales from the 1973 Season - Nascar Hall of Fame
1973 Formula One season - Wikipedia
1947 Bugatti Type 73 Monoposto Race Car - Sports Car Market