I think I only raced there a couple of times. I mostly raced at Forest City, Fort Dodge, New Hartford and a few others. I raced mostly between 1969 to 1975, then went to college in Phoenix. I raced a Penton 125, Kawasaki 250, Maico 501, and my brother raced a Yamaha 125 and a Penton 175. My best friend at the time raced a Penton, then a KTM when they changed and later had the number 1 plate in the state. I imagine he raced over there quite a bit after I went to college.
It is interesting that coincidences seem to happen all the time.