1957. Fourth Edition. 558 pages. No dust jacket. Red cloth. Black and white illustrations throughout. Pages remain bright and clear with minor tanning to end pages, paste downs and text block edges. The binding is slightly shaky but pages remain firmly attached. Small pencil mark to half title page. Boards have light shelf-wear with corner bumping. Sheer staining to rear. Small mottled area to front. Mild sunning and crushing to spine and edges. Book has a slight forward lean.