1962. Seventh Revised Edition. 131 pages. No dust jacket. Brown and white paper covered boards. Contains black and white illustrations throughout. Pages remain bright and clear with minimal tanning and foxing. Light creasing to gutter. Tearing to hinges. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Soft crushing to spine ends. Some tanning to spine and edges. Light scuffing to edges.