http://www.cale.com/brom/art.htm It's a page about Brom's
art. I always believed that Brom envisioned Dark Sun the best. Even
though Zalanthas is not Athas, there are some aesthetic similarities. Dark
Sun material is at the bottom left.
Here's another page to check out: http://www.athas.org Go to
the products listing and you should see a picture for each cover.