1955. 4th Impression. Unpaginated. Pictorial dust jacket over blue cloth. Volumes I-III each paginated separately. Black and white photographic plates throughout. Binding remains firm. Pages and plates have light tanning and foxing throughout. Boards have light shelf-wear with corner bumping. Light tanning to spine and edges with crushing to spine ends. Wear marks overall. Unclipped jacket has heavy edgewear with areas of loss, heavy tears, chips, and creasing. Water staining to edges. Light tanning to spine and edges. Wear mark and foxing overall.