1960. 4th Edition 1st Impression. 277 pages. Dust jacket over black cloth with gilt lettering. Contains black and white illustrations. Pages remain bright and clear with minimal tanning and foxing. Binding remains firm. Pen inscription to front free endpaper. Boards have mild edge-wear with slight rubbing to surfaces. Gilt lettering to spine is slightly dulled. Unclipped jacket has light edgewear with tears and creasing.