1939. Third Edition. 184 pages. Plain dust jacket over red cloth covered boards with gilt. Pages remain clear with minimal tanning and foxing. Prelims are moderately foxed. Plates are bright and clear. Some occasional mild cracking to gutters throughout, binding remains reasonably firm. Previous owner's inscription to front free end-paper. 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 bright and clear. Patch sunning to spine. Rear board is stained. Unclipped jacket has heavy edge-wear with some areas of loss, heavy tears, chips and creasing.