I remember the race at South Bend as a young teenager. My father attended the race but wouldn't let me go for some reason. I remember that it definately was a USAC race and his death was covered in the South Bend Tribune. Their archives might be a resource. I have also seen his name mentioned a couple times in articles about racing in Indiana "back in the day" although I don't recall where I read the articles. Good Luck in your search. Monte Edison