1948. 6th Edition. 185 pages. Pictorial dust jacket over blue cloth. Black and white illustrations throughout. Binding is shaky, pages slightly loose. Pages and illustrations are lightly tanned throughout. Pencil inscriptions to half-title page and rear pastedown. Boards have light shelf-wear with corner bumping. Slight crushing to spine ends. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Light tanning to spine and edges. Light foxing overall.