1960. Sixth Printing. 400 pages. No dust jacket. Orange paper covered boards with cloth spine and gilt. Pages remain clear with minimal tanning and foxing. Text block edge is moderately foxed. Hinges are cracked with exposed netting. Some occasional mild cracking to gutters throughout, binding remains reasonably firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends. Cloth has minor damp and dust stains. Gilt lettering has become dull. Book has a slight forward lean.