Finally finished the joists and started on the subfloor today. It is so hot. I drink so much Gatorade. I worked a lot of the day alone, but in the evening, I got a whole lot of help from FIL and Wife and Kids, as well as some others. We really threw out the subfloor. But other things we got done were to put plastic at the bottom of the crawl space and put some gravel on top of it.
Here is a picture.