1960. Revised Edition. 128 pages. Yellow dust jacket with lettering over red cloth. Pages are clean, with moderate tanning to text block edges. Front endpaper is missing. Boards have mild shelf wear with light rubbing and corner bumping. Some light marking and sunning. Binding remains firm. Unclipped jacket has light edge wear with minor tears and chipping. Moderate tanning and creasing, with rubbing and marking.