Art by Robert Gibson Jones.
As usual for an Earle Bergey cover, the woman is dressed inappropriately for an action adventure. And jeez, look at the tongue on that dino!
Art by Ed Emshwiller gives us a very weird looking alien.
James Bama is best known for his Doc Savage covers (well and for later being a Western regional artist). This cover looks oddly creepy.
This looks like a Powers cover but it’s uncredited.
And here’s another uncredited but gripping cover.
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Fraser Sherman's Blog 