1968. Thirteenth Edition. 475 pages. Pictorial dust jacket over paper covered boards with cloth to spine. Black and white photographic plates. Minor thumb marking and tanning to pages and plates. More prominent to text block edges, slightly less visible to pastedowns and free endpapers. Pen inscription to front free endpaper. Book is noticeably bowed and forward leaning with visible tanning and scuffing overall. Spine has soft crushing to ends. Lettering remains bright and clear. Unclipped dust jacket with moderate rubbing, chipping and tearing to edges. Some minor tanning, creasing and scuffing overall with slight loss and creasing to panels.