SF Encyclopedia Picture Gallery
A E van Vogt. The Beast (Garden City, New York: Doubleday and Company, 1963) [exp as fixup: "The Great Engine" first appeared July 1943 Astounding, "The Beast" first appeared November 1943 Astounding and "The Changeling" first appeared April 1944 Astounding: hb/Howard Burns]
Image courtesy of Clute Science Fiction Library at Telluride