This was such a useful resource page, even if it was pretty haphazardly organized. We just discovered that it's gone. It looks like the owner had posted it to their personal web space with their ISP account, and that account is now gone.
I've grabbed a copy of what still existed in archive.org, but it's missing about a third of the images:
http://modernchivalry.org/greathelms/I did some quick googling, but as far as I can tell, no one ever mirrored the page elsewhere.
What we may have to do is just clear out the entries that are missing the images, reorganize the page a bit, and add some more entries, and just keep a link to one of the snapshots on archive.org to give credit where it's due.