File:SorcerersShip.jpg

Summary
Cover from The Sorcerer's Ship, by Hannes Bok, Ballantine Books, 1969.

Rationale
Fair use claimed for Image:SorcerersShip.jpg:
 * illustrates the subject of the article.
 * no free alternative.
 * the size and resolution make reproduction for bootleg copies difficult.
 * reproduction does not detract from the commercial value.