And, thanks again to
@dave2008 for doing this. This is probably one of the best cross edition art comparisons I've ever seen. That looks like it took a ton of work.
Hrm. Wonder if you could do the same thing for the other two core books? Compare DMG's, and MM's. Obviously the MM's don't have a lot of full spread art, but, it does have a lot of art.
And, I think that when people think of Caldwell and whatnot in terms of 2e, I wonder if they're remembering the old Monster Manual's for 2e that came loose leaf and were meant to be put in a binder. Many of the packages came with chapter separators with full color art. And, to be honest, there are some bloody fantastic pieces in there.