London: The Locomotive Publishing Co., Ltd., (n. p.). 1st edition, ca mid-to-late 1920s. [6], 143, [1 (blank)] pp. Illustrated with schematics, and from photographs. One fold-out. 8vo. 8-5/8" x 5-1/2". Original publisher's blue cloth binding with gilt stamped spine lettering; front board stamped in blind. More