The Challenge from Beyond

From Author Wars - https://authorwars.com/books/the-challenge-from-beyond-727873.html

Overview:

Title: The Challenge from Beyond
Author: uncredited
Year: 1960
Type: Interior Art

Editions/Publications:

Unknown. Fantastic Science Fiction Stories, May 1960 (Unknown, uncredited, Ziff-Davis Publishing Company, $0.35, 132 pages, digest, MAGAZINE)