THE OUTWARD URGE. New York: Ballantine Books. . Small octavo, pictorial wrappers. First U.S. edition. Collects four Troon stories. "A brief, episodic 'family saga' about the near future exploration of space." - Pringle, The Ultimate Guide to Science Fiction, second edition (1995), p. 271. A fine, unread copy (#156776).
"First American edition published 1959" on copyright page.