So after all my fussing about this afghan last week, I was able to get two blocks done one evening, and finished some duplicate stitching on a third.
The white and blue block on top is the Mount Ranier block, which I knitted several years ago and just had to stitch the hiker on. The blue and green block on lower left is Crater Lake, and the tan block on the lower right is for Wind Cave. The links in the descriptions will take you to the Ravelry pages for the blocks. Here are some links to the park websites:
Mount Ranier NP
So this may not be such a big deal after all. There are a lot of blocks, but at least they are fun to knit!