1960. Second Edition Revised. 271 pages. Pictorial dust jacket over red cloth with gilt lettering to spine. Black and white diagrams throughout. Binding remains firm. Pages and diagrams remain bright and clear with light tanning and foxing to endpapers. Water stain to bottom edge of rear pastedown. Previous owner's inscription to front free endpaper. Slight markings present to edges of first few pages. Minor dog-eared corners. Boards have light shelf-wear with corner bumping. Slight crushing to spine ends. Small dent to rear board. Gilt lettering is bright and clear. Unclipped jacket has heavy edgewear with areas of loss, heavy tears, chips, and creasing. Panel flaps partially detached. Red stains to inside panels. Light foxing and tanning with severe wear marks overall.