1958. Fourth Edition. 661 pages. No dust jacket. Half bound in green leather. Green cloth covered boards with gilt. Contains in-text monochromatic illustrations throughout. Pages remain clear with minimal tanning and foxing. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces. Mild crushing to spine ends. Book has a slight forward lean. Peeling and loss to leather elements. Cloth has minor damp and dust stains.