1950. Fourth Edition. 263 pages. No dust jacket. Green cloth boards with gilt lettering. Contains black and white illustrations. Clean pages and illustrations with noticeable tanning and foxing throughout. More pronounced to free endpapers and pastedowns. Pencil inscription to front free endpaper. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Gilt lettering is darkened. Minor wear marks to boards.