1960. Fourth Edtion. 226 pages. Illustrated dust jacket over red cloth covered boards with silver lettering. Pages remain clear with minimal tanning and foxing. Plates are moderately tanned with some foxing. Minor pencil marking to front free end-paper. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends, with fraying cloth and small splits. Moderate tanning to spine. Book has a slight forward lean. Cloth has minor damp and dust stains. Silver lettering is bright and clear. Clipped jacket has moderate edge-wear with chips, tears and creasing. Moderate tanning to spine.