1974. Fourth Printing. 417 pages. Illustrated paper covers. Black and white photographic and illustrated plates. Pages are bright and clear with light foxing and tanning to text block edges and reverse of covers. Occasional annotations, underlining and marginalia in pen; text remains unaffected. Hinges are lightly cracked but covers remain firmly attached. Paper covers have light edge-wear and corner curling with mild scuffing overall. Spine has minor rolling and creasing.