THE DOOR THROUGH SPACE. New York: Ace Books, Inc., . Small octavo, pictorial wrappers. First edition. Ace Double Novel F117. The author's first book. According to Wikipedia, not a Darkover book, but Darkover is mentioned (as another planet) in passing in the book; and many Darkover elements appear in the book. Bound with RENDEZVOUS ON A LOST WORLD by A. Bertram Chandler. Several faint cover creases, else a bright, near fine copy. (#88716).