1958. Fourth Edition (Revised). 192 pages. No dust jacket. Yellow cloth. Illustrations throughout. Pages are moderately tanned and foxed throughout, heavier at end-papers, paste-downs and text-block edges. Previous owner's inscription to front free end-paper. Binding remains firm. Boards have moderate edge-wear with bumping to corners and rubbing to surfaces. Top edge of text block is dust marked. Mild crushing to spine ends. Book has a slight forward lean.