1955. Sixth Edition. 381 pages. No dust jacket. Blue cloth with gilt lettering. Volume I. Part of old dust jacket adhered to front free endpaper. Black and white illustrations throughout. Very light foxing and tanning to pages. More prominent to text block edges, pastedowns and free endpapers. Light cracking to gutters; some looseness to binding but pages remain attached. Boards have minor corner bumping and edgewear with mild tanning and scuffing overall. Spine has minor tanning with soft crushing to ends. Lettering remains bright and clear. Book has a slight forward lean.