THE HIDDEN PLANET: SCIENCE-FICTION ADVENTURES ON VENUS. New York: Ace Books, Inc., . Small octavo, pictorial wrappers. First edition. Ace Books D354. Collects five stories by Chad Oliver, J. T. McIntosh, Lester del Rey, Stanley G. Weinbaum and Leigh Brackett. Reginald 15561. Owner's name and address in ink on inside front cover, first and last leaves foxed, a very good, bright copy. (#75150).