New York: Street & Smith, . First Edition. Octavo (19cm.); original blue-green pictorial cloth stamped in tan, blue, and green, gilt-lettered spine with "Federal Book Co." imprint at foot; ,ii,-269,,(ads)pp.; frontispiece. Very light shelf wear, corners slightly bumped, spine a bit toned, some minor soiling, else a Very Good or better, rather superlative copy of an elusive early Sinclair juvenile. Forms part of the pseudonymously published series of books about the naval cadet Clif Faraday, authored by Sinclair and at least two others. OCLC locates 6 copies as of November, 2016.