New York; (1941) but: Gnome Press, 1958. Octavo. Item #028338
A later printing with a very bright unclipped dust jacket omitting the address of Gnome Press, with two old tape mends to underside and in a later state binding of light green paper covered boards, spine lettering black, page before title page is splitting at gutter. One of the classic words in Heinlein's Future of History series. Noted in Anatomy of Wonder (2004) II-514.