London, Severn House, 1985. First Edition. First Impression. Hardback. A fine copy. The first UK hardback edition (the first US HB was 1970 by Walker, with the story and Jim first appearing in 1957 in Astounding). Very hard to find, indeed we weren't aware of this issue until it was offered to it - it appears neither do most records. Preceded by a US trade hardback in 1970, and an SFBC in 1977. The first edition is by Pyramid in the US from 1961, with the first British PB in 1966. Cover art by Nigel Hills [8911, Hyraxia Books].