1956. Sixth Edition. 474 pages. No dust jacket. Cloth covered boards with gilt to leather spine. Pages remain bright and clean with minimal tanning and foxing. Cracking to hinges with exposed netting. Binding loose. Some free endpapers missing or heavily torn. Most of page 32 missing. Boards have moderate shelf wear with mild bumping and fraying to corners and crushing and rubbing to spine ends. Gilt lettering remains bright and clear.