Showboat World (map)

From Author Wars - https://authorwars.com/books/showboat-world-map-1129909.html

Overview:

Title: Showboat World (map)
Author: uncredited
Year: 1981
Type: Interior Art

Editions/Publications:

Unknown. Showboat World (Unknown, uncredited, DAW Books, ISBN-10: 0879976608, $2.25, 188 pages, Paperback, Novel)
Unknown. Showboat World (Unknown, uncredited, DAW Books / New American Library of Canada, ISBN-10: 0879976608, C$2.50, 188 pages, Paperback, Novel)