1967. Second Edition. 100 pages. Illustrated dust jacket over blue cloth. Black and white illustrations throughout. Pages are bright and clear with light foxing and tanning to text block edges. Binding remains firm. Boards have minor corner bumping and edgewear with mild tanning and scuffing overall. Spine has light tanning with soft crushing to ends. Lettering remains bright and clear. Book has a slight forward lean. Unclipped dust jacket with minor rubbing, chipping and tearing to edges. Moderate tanning and scuffing overall.