1954. Fourth Edition. 174 pages. Illustrated dust jacket over blue cloth covered boards. Contains black and white photographic plates. Pages remain clear with minimal tanning and foxing. Plates are bright and clear. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Cloth has minor damp and dust stains. Mild crushing to spine ends. Book has a slight forward lean. Unclipped jacket has heavy edge-wear with some areas of loss, heavy tears, chips and creasing.