The Black Cauldron (map)

From Author Wars - https://authorwars.com/books/the-black-cauldron-map-1580401.html

Overview:

Title: The Black Cauldron (map)
Author: uncredited
Year: 1965
Type: Interior Art

Editions/Publications:

Unknown. The Prydain Chronicles (Unknown, uncredited, GuildAmerica Books / SFBC, $13.98, 767 pages, Hardcover, Omnibus)