1966. Tenth Impression. 141 pages. No dust jacket. Brown cloth boards with lettering. Clean pages with light tanning and mild foxing throughout. Pencil and pen markings to front free endpaper. Binding remains firm. Boards have mild edge-wear with slight rubbing to surfaces and bumping to corners. Lettering is bright and clear. Minor sunning to spine and edges with crushing to spine ends. Heavy wear and water marks to back board.