1965. Second Edition. 592 pages. Plain dust jacket over orange cloth covered boards with silver lettering. Pages remain clear with minimal tanning and foxing. Slight tanning to page edges. Tear to front free end-paper with chunk missing. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends. Book has a slight forward lean. Silver lettering is bright and clear. Unclipped jacket has light edge-wear with tears and creasing.