1959. Sixth Edition. 373 pages. Illustrated dust jacket over red cloth covered boards with gilt. Pages remain clear with minimal tanning and foxing. Cracking to hinges, no damage to end papers. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends. Gilt lettering is bright and clear. Cloth has minor damp and dust stains. Book has a slight forward lean. Unclipped jacket has moderate edge-wear with chips, tears and creasing.