The Helicopter and How It Flies by J. Fay
1962. Reprint. 105 pages. Pictorial dust jacket over brown cloth. Black and white illustrations throughout. Pages are mostly clean overall, with moderate tanning throughout. Occasional thumb-marking. Binding is firm. Boards have slight edge wear with corner bumping. Minor crushing to spine ends. Book has a slight forward lean. Unclipped jacket. Panels have moderate edge wear with chips, tears and creasing. Noticeable tanning to spine.