Good stuff, Bob!! Was the crawler with the tiller wheel a Hold or was it Catterpillar??
That one is a HOLT crawler tractor.
We actually have a museum near here that is just getting started(2 years now) one item that was donated is a 100HP diesel engine, 2cyl, 2 cycle. Each piston is 13" in dia. It does run and is running when they have the 2 shows per year. It came from a nearby cheese box plant.
This is an annual event here and sadly we don't have a museum to highlight these machines. Most of them are owned by local/regional farmers who bring them in for the show. I was surprised as I walked around how many farm names I recognized. Even saw some of the farmers and their families who farm the fields around my property.
These are camera phone photos, I wish I had taken a real camera as some of these machines were museum quality. The McCormick Orchard tractor was simply astounding but I never found the owner to talk with about the machine. I couldn't get better photos because it was in a large open sided shed sandwiched between other tractors.
There were exhibits for stationary engines, and also for scale stationary engines. Didn't take pictures of those
There were also demonstrations of corn husking, blacksmithing
(several antique forges set up by a local blacksmithing group), hay bailing, etc all with antique equipment. They even had a large model train set up.
Its a nice size show. Not huge. There are plenty of bigger shows. But this one is sized just about right to spend an afternoon with your family. Lots of good food too.