Scanned from Cycle News East March 21, 1972. Note Penton riders in Reserve Hare Scrambles article and results.
100cc 1. G. Delp (Hod) 2. C. Cushman (Pen)
125cc 1. D. Hoyt (Pen) 2. D. Burton (Pen)
(http://i957.photobucket.com/albums/ae59/CheneySachs/175Intro1972.jpg)
Horowitz seems to like it. It, or the guy holding it. I can't tell.