1922. No edition remarks. 280 pages. No dust jacket. Blue cloth covered boards with gilt. Fold out diagrams and illustrations. Pages are moderately tanned and foxed throughout, heavier at end-papers, paste-downs and text-block edges. Some slight tearing to some fold outs. Binding is slightly shaky. Boards are stained. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Mild crushing to spine ends. Minor fraying to cloth at spine ends. Gilt lettering is bright and clear.