1961. Fourth Impression. 232 pages. No dust jacket. Green cloth. Contains black and white illustrations throughout. Pages remain bright and clear with minimal tanning and foxing. Thumb-marking present. Visible creasing to gutter. Boards have mild edge-wear with slight rubbing to surfaces. Soft crushing to spine ends. Visible tanning to spine and edges. Light marks to boards. Binding is slightly shaky, but pages remain intact.