By that time, however Ken, it was all a different ball game...

The GP cars they ran at Watkins Glen were unable to compete here. Even Brabham built a different car, though he could possibly have simply fitted a different engine, while Cosworth had to build bespoke engines for Team Lotus and Frank Williams to fit our formula.

I would suggest it's also an unfair comparison, for the Cameron Argetsinger offerings for the late-sixties USGPs were totally divorced from anything else previously offered for any Grand Epreuve, more on a par with the Indianapolis 500.