1929. Sixth Edition. 434 pages. Illustrated dust jacket over brown cloth covered boards. Pages remain clear with minimal tanning and foxing. Previous owner's inscription to front free end-paper. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends, with fraying cloth and small splits. Cloth has minor damp and dust stains. Board corners are bumped. Book has a slight forward lean. Unclipped jacket has moderate edge-wear with chips, tears and creasing. Moderate tanning to spine.