1947. Fourth Edition. 322 pages. No dust jacket. Blue cloth. Black and white illustrated plates. Moderate tanning to pages and text block edges. Much heavier foxing and tanning to pages. Pen inscription to front free endpaper. Binding remains firm. Boards have minor corner bumping and edgewear with prominent tanning and scuffing overall. Spine has noticeable tanning with visible fraying, splitting and crushing to ends.