1966. 26th Edition. 430 pages. No dust jacket. Red cloth. Contains black and white illustrations throughout. Pages remain bright and clear with minimal tanning and foxing. Thumb-marking present. Pencil inscription to front free endpaper. Brown staining to pages throughout. Noticeable creasing to gutter. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Soft crushing to spine ends. Light tanning to spine and edges. Water staining to boards.