1968. Third Edition. 150 pages. Photographic paper covers. Black and white photographic plates throughout. Light tanning to pages with moderate foxing an d water staining to text block edges; text unaffected. Annotations, underlining and marginalia in pencil throughout. Pencil inscription to front free endpaper. Binding remains firm. Paper covers have light edge-wear and corner curling with moderate tanning overall. Spine has moderate rolling and creasing.