New York: Fantasy and Science Fiction, 1956. First appearance of this title in print, in The Magazine of Fantasy and Science Fiction, in 3 parts: October, November and December, 1956. 12mo, 3 volumes, in original pictorial wrappers. More
New York: The Magazine of Fantasy and Science Fiction, 1956. First Edition. November, 1956, volume 11, No. 5; the first appearance of "The Door Into Summer" - a three part serial (this is part 2). 12mo. Internally clean and bright. More
New York: TOR, 2010. First Edition. large octavo, 2 volumes; Volume I: Learning Curve 1907-1948, dust jacket is fine. Volume II:The Man Who Learned Better 1948-1988, dust jacket is fine. Volume I is X-lib, with library stamp on ffep and title page; Volume II is a fine copy. More
New York: Ballantine Books, Inc., 1984. First Edition. octavo, 376 pages; publishers bright red cloth binding, printed in gilt, gray end papers; publisher's slipcase covered in matching bright red cloth. Number 594 of 750 signed by the author on the limitation page. A fine, as new copy. More
New York: Galaxy Publishing Co., 1966. 12mo, pages 103-147; original pictorial wrappers. The 3rd volume of 5 volumes, and first appearance of this title, published in the February 1966 issue of IF: Worlds of Science Fiction. Internally clean and bright, with no markings of any kind. More