Here's a "Wolverton cover" from WTOTF 4, consisting of art lifted from Wolverton's story "Nightmare World" from WTOTF3, and a "pasted girl," who, somehow, looks insufficiently upset. I wonder if the editor was misguidedly trying to add GGA appeal?
By the way, "Nifhtmare World" is arguably THE CLASSIC Wolverton horror story. It concerns a scientist who experiments on himself with hallucinogenic drugs and, after drinking an "acrid" liquid, experiences what can be accurately described as the ultimate "bad trip."
Talk about Basil being in his element!