1943. Second Edition. 927 pages. No dust jacket. Blue cloth boards with gilt lettering. Contains black and white illustrations and folded diagrams throughout. Moderate crinkling to paper at gutter. Pages and illustrations are heavily tanned and foxed with visible markings throughout. Binding throughout is slightly loose but pages remain attached. Pen inscription to front pastedown. Boards have heavy edge-wear with bumping to corners, crushing to spine ends and rub wear all over. Slight crushing and fraying to spine ends and corners. Gilt lettering is darkened. Moderate sunning to spine and edges. Visible wear marks to boards.