1925. The Fourth Revision. 767 pages. No dust jacket. Blue cloth with gilt lettering to decorative spine. Maps and plans by J. F. Horrabin. Pages remain bright and clear with minimal tanning and foxing. Heavier foxing to endpapers and pastedowns. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Mild crushing to spine ends. Gilt lettering is bright and clear.