Poor Credit Scores

This morning I was looking through a WotC-published monster book from a few years back and came upon a monster that I knew had appeared somewhere before but couldn't remember where. Perhaps the mists of sleep still clouded my mind a bit, because my first thought was, "I'll just look to see who originally created the monster, and that will help me figure it out." Of course, a tenth of  a second later I remembered, WotC doesn't credit the original creator of the material.

Now, ...