1958. Fourth Edition. 36 pages. Illustrated paper covers. Black and white photographic plates and illustrations. Light foxing and tanning to pages and plates. More prominent to text block edges and reverse of covers; reverse of covers noticeably water stained also. Hinges are lightly cracked but covers remain firmly attached. Paper covers have light edge-wear and corner curling with noticeable tanning and scuffing overall. Spine has visible chipping, rolling and creasing.