1971 - Richard wins his 135th Grand National race in the West Virginia 500 at Ona, West Virginia. Finishing 2nd was Bobby Allison in his Grand American Ford Mustang 'pony' car.
Two nights earlier, Allison won a combined Grand National / Grand American race at Bowman-Gray Stadium in Winston-Salem, NC, and the King finished 2nd. To this day, however, NASCAR does not recognize Allison's win as an official Grand National victory. Petty is credited as the second place finisher; therefore, the race has no official winner.
I spotted the winning trophy on display at the Richard Petty Museum during my visit earlier this year: