1941. Third Edition. 803 pages. Green jacket over black cloth with gilt lettering to spine. Contains black and white photographs and diagrams throughout. Pages are lightly tanned, but text remains clear. Moderate foxing to endpapers. Binding is firm. Boards and spine have minimal shelf-wear, with mild corner bumping and crushing to ends. Gilt remains bright. Light rubbing and scuffing overall. Boards are slightly bowed. Unclipped jacket. Moderate tanning to spine. Panels have light edgewear, with small tears, chips and creases, heavier to spine ends. Larger tear to rear panel. Moderate scuffing to exterior.