1947. Sixth Edition. 677 pages. No dust jacket. Green cloth board. Contains black and white illustrations. Clean pages and illustrations with noticeable tanning and foxing throughout. More pronounced to free endpapers and pastedowns. Pencil and pen inscription to front free endpaper. Pen marking to fore edge textblock. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Moderate sunning to spine and edges with crushing to spine ends. Visible wear marks to boards.