1948. Seventh Edition. 377 pages. Dust jacket over blue cloth. Black and white illustrations throughout. Clean pages with mild tanning and foxing to endpapers. Tightly bound with faint thumb-marking throughout. Previous owner's inscription to front endpaper. Boards have light edgewear with corner crushing and light marking to boards. Mild tanning to board edges and spine, which has mild crushing to ends. Book has forward lean. Mild water stains and droplets to front board. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Moderate foxing. Moderate water staining to spine. Notable rubbing and marking all over.