1957. Revised 5th Edition. 1015 pages. No dust jacket. Red cloth. Several fold out maps. Pages remain clear with minimal tanning and foxing, mild to end-papers and text-block edges. Text block has a mild wave throughout. No evidence this is damp damage. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Mild crushing to spine ends. Book has a slight forward lean. Gilt lettering is darkened.