1959. Fourth Impression. 287 pages. Blue dust jacket over blue cloth. Pages remain bright and clear with minimal tanning and foxing. Pencil inscription to front free endpaper. Thumb-marking present. Visible creasing to gutter. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Light crushing to spine ends. Some tanning to spine and edges. Light marks to boards. Book has a slight forward lean. Unclipped jacket has moderate edgewear with chips, tears and creasing. Visible tanning to spine. Some rubbing to surfaces. Scuffing to edges.