1960. Sixth Impression. 320 pages. Dust jacket over black cloth. Pages remain bright and clear with minimal tanning and foxing. More pronounced to endpapers, pastedowns and text block edges. Binding remains firm. Boards have noticeable edge wear with corner bumping and rubbing to surfaces. Gilt lettering is bright. Unclipped dust jacket. Panels to dust jacket have light edge wear with tears and creasing. Heavier foxing to reverse of jacket.