1949. Fourth Edition. 228 pages. No dust jacket. Blue cloth covered boards with gilt. Pages remain clear with minimal tanning and foxing. Binding remains firm. Pages remain clear with minimal tanning and foxing, mild to end-papers and text-block edges. Heavy cracking at the hinges with exposed binding material. Some occasional mild cracking to gutters throughout, binding is shaky. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Cloth has minor damp and dust stains. Mild crushing to spine ends. Book has a slight forward lean. Moderate tanning to spine. Gilt lettering is darkened.