The City of Force

From Author Wars - https://authorwars.com/books/the-city-of-force-756981.html

Overview:

Title: The City of Force
Author: Dillon
Year: 1959
Type: Interior Art

Editions/Publications:

Unknown. Galaxy Magazine, April 1959 (Unknown, Dillon, Galaxy Publishing Corporation, $0.50, 196 pages, digest, MAGAZINE)
Unknown. Galaxy Science Fiction [UK], No. 73 (Unknown, Dillon, Strato Publications, 3/6, 196 pages, digest, MAGAZINE)