King of the Fourth Planet. / Cosmic Checkmate.
New York: Ace Books, Inc., 1962. First Edition. Paperback. Ace Double F-149. Toning to pages. A near fine copy. ; Small octavo. More
New York: Ace Books, Inc., 1962. First Edition. Paperback. Ace Double F-149. Toning to pages. A near fine copy. ; Small octavo. More