THE BIG JUMP. New York: Ace Books, Inc., . Small octavo, pictorial wrappers. First separate edition. Ace G683. First published in 1955 as half of an Ace Double (D-103). Mankind's first attempt to reach another star system fails: one man came back -- but he was neither dead nor alive. A fine, unread copy. Cover art by Jeff Jones. (#143950).
No statement of printing.