1939. Thirteenth Edition. 103 pages. Dust jacket over blue cloth. Black and white illustrations throughout. Pages are moderately tanned to endpapers. Mild cracking to gutters, however binding remains firm. Mild thumb-marking present. Boards have light shelf-wear with corner bumping. Mild crushing to spine ends. Book has forward lean. Unclipped jacket has moderate edgewear with chips, tears, and creasing. Heavy tanning and scuffing to spine. Notable rubbing and marking all over.