1962. Sixth Impression with amendments. 51 pages. Pictorial dust jacket over green cloth. Black and white photographic plates throughout. Binding remains firm. Pages and plates are lightly tanned throughout. Markings to some pages. Boards have light shelf-wear with corner bumping. Slight crushing to spine ends. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Light tanning to edges. Pen inscription to front flap. Wear marks overall.