1959. Fourth Impression. 188 pages. Illustrated dust jacket over blue cloth covered boards with gilt. Pages remain clear with minimal tanning and foxing. End papers are more notably foxed. Text block edge is moderately foxed. Minor pencil marking to front free end-paper. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends. Gilt lettering is bright and clear. Boards have minor damp and dust stains, heavier at rear. Book has a slight forward lean. Unclipped jacket has light edge-wear with tears and creasing.