New York: Doubleday & Company, 1956. First Edition. Hardcover. Near Fine / Near Fine. Original black cloth, lettered in lime green to the spine. 8vo - 192 pp. This title first appeared in "Astounding" in serial format. It was then published as a stand alone novel in 1956. It is his first published Science Fiction title. This copy signed by the author directly to the title page without inscription. Jacket art by Mel Hunter. This copy has a review slip laid in. There is some scuffing along the bottom edge of the book from shelf-wear. The jacket shows some very minor edge-wear.