1964. Fourth Edition. 295 pages. Dust jacket over orange cloth. Third Impression. Pages are bright and clear with very light foxing, thumb marking and tanning to text block edges, pastedowns and free endpapers. Binding remains firm. Boards have minor corner bumping and edgewear with mild tanning and scuffing overall. Spine has minor sunning with soft crushing to ends. Book has a slight forward lean. Unclipped dust jacket with minor rubbing, chipping and tearing to edges. Moderate tanning and scuffing overall.