1951. First Edition. 917 pages. No dust jacket. Black cloth. Volume Four. Contains fold-out illustrated maps. Pages are lightly tanned and foxed throughout. Occasional thumb-marking present. Fold-out maps are in good condition with some light tanning. Binding is slightly shaky. Boards have moderate edge wear with bumping to corners and rubbing to surfaces. Soft crushing to spine ends. Mild tanning to spine and edges. Notable scuffing and pale marking to surfaces.