1959. 4th Edition. 320 pages. Illustrated dust jacket over blue cloth with gilt lettering. Contains black & white, colour illustrations and plates. Pages are mildly tanned throughout. Text is clear. Binding is slightly shaky, however pages remain attached. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Visible sunning & crushing to spine. Noticeable white staining. Gilt lettering remains bright and clear. Unclipped jacket. Panels have light edge wear with tears and creasing. Visible tanning to spine.