1959. Sixth Edition. 419 pages. No dust jacket. Red cloth. Contains black and white illustrations throughout. Pages remain bright and clear with minimal tanning and foxing. Pencil inscription to front free endpaper. Thumb-marking present. Noticeable creasing to gutter. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Some crushing to spine ends. Visible tanning to spine and edges. White marks to boards. Brown marks to rear board. Textblock is shaky.