1971. Third and Revised Edition. 181 pages. No dust jacket. Orange plastic covered boards with lettering. Contains black and white illustrations. Clean pages and illustrations with light tanning and mild foxing throughout. Pencil and pen markings to front free endpaper and pastedown. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Lettering is bright and clear. Visible wear marks to boards.