1961. Fourth Impression. 211 pages. No dust jacket. Blue cloth covered boards with gilt. Pages are moderately tanned and occasionally foxed throughout. End papers are more notably tanned. Plates are bright and clear. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Mild crushing to spine ends. Book has a slight forward lean. Gilt lettering is bright and clear. Moderate tanning to spine and board edges.