1960. Twenty-Third Impression. 694 pages. No dust jacket. Green cloth. Clean pages with mild tanning and foxing throughout. Tightly bound with faint thumb-marking throughout. Previous owner's inscription to front endpaper. Boards have light edgewear with corner crushing and notable foxing to boards. Mild tanning to spine, which has mild crushing to ends. Book has forward lean. Boards are mildly warped.