1960. Third Edition. 236 pages. Blue pictorial dust jacket over light blue cloth with black lettering and decoration. Black and white illustrations throughout. Binding remains firm. Pages remain bright and clear with light tanning throughout and light foxing to hinges. Illustrations are bright and clear, with some light tanning to edges. Pencil marking to rear pastedown. Boards have moderate shelf-wear with bumping to corners. Light sunning to spine and edges with crushing to spine ends. Wear marks to front board. Front board is slightly warped. Unclipped jacket has heavy edgewear with some areas of loss, heavy tears, chips, and creasing. Light tanning and wear marks overall. Green markings to top edge of inside front panel.