1956. Second Edition Revised. 667 pages. Blue dust jacket over red cloth. Pages remain bright and clear with minimal tanning and foxing. Heavier tanning to free endpapers and pastedowns and pages 138-139. Previous owner's inscription to front free endpaper. Some creasing to gutter. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Soft crushing to spine ends. Light white marks to boards. Unclipped jacket has moderate edgewear with chips, tears and creasing. Loss to spine ends and edges. Visible rubbing to surfaces. Scuffing to edges.