File:Worlds Best Science Fiction 1968 cover.jpg

Summary
Jack Gaughan's cover art from World's Best Science Fiction: 1968 edited by Donald A. Wollheim and Terry Carr, Ace Books, 1968.

Free Use Rationale
Fair use claimed for image:
 * illustrates the subject of the article World's Best Science Fiction: 1968.
 * no free alternative.
 * the size and resolution make reproduction for bootleg copies difficult.
 * reproduction does not detract from the commercial value.
 * source: https://www.abebooks.co.uk/servlet/BookDetailsPL?bi=31084475194