After They Took the Panama Canal

From Author Wars - https://authorwars.com/books/after-they-took-the-panama-canal-663153.html

Overview:

Title: After They Took the Panama Canal
Author: uncredited
Year: 1970
Type: Interior Art

Editions/Publications:

Unknown. Galaxy Magazine, February 1970 (Unknown, uncredited, Universal Publishing & Distributing Corporation, $0.60, 164 pages, digest, MAGAZINE)
Unknown. Galaxy Science Fiction [UK], March 1970 (Unknown, uncredited, Universal-Tandem Publishing Company Ltd., 5/-, 164 pages, digest, MAGAZINE)