Spy Rampant on Brown Shield

From Author Wars - https://authorwars.com/books/spy-rampant-on-brown-shield-919049.html

Overview:

Title: Spy Rampant on Brown Shield
Author: Gray Morrow
Year: 1966
Type: Interior Art

Editions/Publications:

Unknown. Worlds of Tomorrow, May 1966 (Unknown, Gray Morrow, Galaxy Publishing Corp., $0.50, 164 pages, digest, MAGAZINE)