1971. 25th Revised Edition. 255 pages. No dust jacket. Red cloth boards with lettering. Contains black and white illustrations. Clean pages and illustrations with light tanning and mild foxing throughout. More pronounced to free endpapers and pastedowns. Pen markings to front free endpaper and top edges textblock. Minor cracking to gutters, with exposed netting. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Lettering is bright and clear. Minor scuffing to edges and corners. Visible wear marks to boards.