New York, Scribners, 1954. First edition, first impression. Hardback. A near fine copy in a good jacket. From the collection of George Price with his stamp (also stamped to the jacket).One of Heinlein's juvenile novels. Notable for the presence of non-white lead characters at a time where it was rare to see anything but white characters, particularly as protagonist. Large chips to the spine tips and smaller ones to the forecorners. Large L-shaped tear to lower spine. Cover art by Clifford Geary [9396, Hyraxia Books].