We watched a huge diesel engine at work that once supplied the city of Odessa, Missouri, with electricity. (Ignore the title on the video, which says "steam engine".)
My knee and my overall physical strength were much better than a week ago when we went to a different tractor show. I was able to cover the whole area with Cliff; of course, I had my cane-chair, so I was able to sit while he circled the tractors.
I have more pictures, but I'll save them for another entry.