1980 Pennsylvania Grand PrixCasey Viator wins his second Grand Prix of the session. He beat out Chris Dickerson (2nd), a much improved Roy Callender (3rd) and Robby Robinson (4th)Source: Muscle and Fitness (Issue Aug 1980) Page #60 - Muscle & Fitness (Issue Aug 1980) Page #61 - Muscle & Fitness (Issue Aug 1980)