Knoxville Nationals 1975 Program Super Modified Sprint Car Racing Iowa Marion Co

Knoxville Nationals 1971 Program Super Modified Sprint Car Racing Iowa Marion Co

Knoxville Nationals 1972 Program Super Modified Sprint Car Racing Iowa Marion Co

Knoxville Nationals 1974 Program Super Modified Sprint Car Racing Iowa Marion Co

Knoxville Nationals 1968 Program Super Modified Sprint Car Racing Iowa Marion Co

1977 Knoxville Nationals Sprint Car Program, Doug Wolfgang/Bob Trostle Win

1978 Knoxville Nationals Program

Doug Wolfgang Knoxville Nationals 1977 Program Super Modified Sprint Car Racing