It's a little tricky as each thumbnail link leads to another HTML link, not directly to the JPG. It could be done but you'd need a fairly smart download manager, or a mirroring/spider application that you point to that specific page and have it download the pages that it links to, then go in there and pick out the JPGs that are actually the full-size photos.
Long story short, it almost certainly can be done but will take enough fiddling that it's probably not worth doing.

If you're really determined, I'm look at a mirroring program. But even there it'd be sorta tricky as you don't want it to download
every page on the site, and wdwinfo is inconsistent with its URL heirarchy... some photos are under "Photos", some are under "photos" (URLs are case-sensitive), some are under "wdwinfo", etc.