1969. Sixteenth Impression. 450 pages. No dust jacket. Blue cloth with gilt lettering. Black and white illustrations throughout. Minor foxing and heavy tanning to pages. More prominent to text block edges, much lighter to pastedowns and free endpapers. 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. Lettering remains bright and clear. Book has a slight forward lean.