1957. Fourth Edition. 212 pages. Pictorial dust jacket over blue cloth with gilt lettering. Black and white photographic plates and illustrations. Light tanning to pages, plates and text block edges; milder to pastedowns and free endpapers. Binding is slightly loose but pages remain attached. Boards have minor corner bumping and edgewear with mild sunning and scuffing overall. Spine has light sunning with soft crushing to ends. Lettering remains bright and clear. Unclipped dust jacket with minor rubbing, chipping and tearing to edges. Moderate tanning and scuffing overall.