Darrell and Dale... there's little doubt in my mind that the Binner Equipment 66 shot was taken at Waterloo. The corrugated metal fence on the outside of the armco barrier was to restrict viewing the track from the street directly on the other side. The track literally sat 8 feet from the road.
There was no official souvenir program for the speedway then. Gater Racing News printed a special page (an outer cover, if you will) for Gaters sold at the track. That print across the top of the picture probably said LM Clay Country, a section devoted to a series of pictures of Late Model action. I still have a few of them tucked away for safe keeping, as well as a bunch of Maplegrove Speedway admission tickets.
Possible drivers in the shot include: Carl Game - 72 (being tagged by the 66), Bill Best - 50 (pushing the 66), Ken Updyke - either 150, 151 or 152 (sitting sideways facing the outside). If I had to guess who was driving the 66, I'd say probably not Denis Taney. He drove a red 11T. My best guess would be either Bill Matteson or Wally Burnett.