Space Devastator

From Author Wars - https://authorwars.com/books/space-devastator-127408.html

Overview:

Title: Space Devastator
Author: uncredited
Year: 1939
Type: Essays

Editions/Publications:

Unknown. Amazing Stories, July 1939 (Unknown, uncredited, Ziff-Davis Publishing Company, $0.20, 148 pages, pulp, MAGAZINE)
Unknown. Fantastic, November 1965 (Unknown, uncredited, Ultimate Publishing Co., Inc., $0.50, 164 pages, digest, MAGAZINE)