1957. Third Revised Edition. 160 pages. Pictorial dust jacket over green cloth. Black and white photographic plates. Minor foxing and tanning to pages and plates. Slightly more prominent to text block edges, pastedowns and free endpapers. Light cracking and creasing to gutters but binding remains firm. Boards have minor corner bumping and edgewear with mild sunning and scuffing overall. Spine has heavier sunning with soft crushing to ends. Book has a slight forward lean from mild bowing. Unclipped dust jacket with moderate rubbing, chipping and tearing to edges. Moderate tanning and scuffing overall.