The Ghost Makers

Great cover.  Maybe not the best rendering but it sure is a fun illustration.  I read this tale long ago when I found a copy from Bantam.  As usual I maintain the early tales are the best, but that's because I like seeing the progression of not only the character but the settings as well.  If you haven't read this one, do so.  If you want a preview, check out this review.
Bonus cover is by Sandy Kossin for the Bantam release.  Love this one, too.