There are quite a few websites out there these days that have taken to posting entire scanned comic books, many of which are under copyright and trademark. In another post one of these days, I'm going to write not so much about the legality — others can speak more authoritatively to that topic — but of the lack of respect it sometimes shows for the efforts of the creators they're trying to honor. (I will though say that some folks out there seem to think that "fair use" just means you didn't make any money off it. If you wrote a novel and I printed up bootleg copies of it and gave them away on street corners, I wouldn't make any money off it but your copyright would still have been egregiously violated.)
What I will say for now is this: A lot of what's being posted these days is material originally published by Western Publishing Company as either a Dell or Gold Key comic. That probably means it didn't have credits when it was published. I have decided to give up my entire career, resign from all my jobs, and just spend my life correcting erroneous artist identifications.