ORPHANS OF THE SKY
$500 · Offered by L. W. Currey
New York: G. P. Putnam's Sons, 1964 . Octavo, cloth. First U.S. edition. Part of Heinlein's future history series, first published as a two-part serial in ASTOUNDING SCIENCE FICTION as Universe and Common Sense. Anatomy of Wonder 2004 II-513. Sargent, British and American Utopian Literature, 1516-1985, Additions. See Survey of Science Fiction Literature IV, pp. 1653-64.
Found via Rare Books Intel, a search across rare-book dealers, auction houses and marketplaces worldwide.