Welch rolled his 1960 Lotus 18 after contact with another car.
Silverstone Classic makes for an unforgettable weekend.
To honoree Dorsey Schroeder, it was 'one of the most amazing events of its kind in the world.'
Unser and amateur partner Peter Klutt win in Klutt's 1969 Corvette
Katz 'exhibits the qualities of a fine gentleman, has high standards, integrity, honesty and demonstrates sportsmanship on the race track.'
Racers include Willie T. Ribbs, Lyn St. James, Scott Goodyear, Al Unser, Jr., Pete Halsmer, Dick Simon