1956. Fourth Edition. 257 pages. No dust jacket. Blue cloth boards with gilt lettering. Clean pages with light tanning and mild foxing throughout. More pronounced to free endpapers and pastedowns. Pen inscription to front free endpaper. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Gilt lettering is darkened. Moderate sunning to spine and edges with crushing to spine ends. Minor splits to spine ends and corners causing cloth to be frayed. Visible wear and water marks to boards.