This Erol Otus Remorhaz illustration appears to be signed in 1976. You can find it, and a reminiscence of the development of the Remorhaz here, at the Lord of the Green Dragons blog. It took a little digging to find this image, as the retrospective was posted WAY BACK on March 4, 2009!Assuming you have a wealth of time on your hands (and who doesn't), or even if you don't, it is worthwhile reading through some of the back posts at Lord of the Green Dragons.