Ferris, Richard. How It Flies or, Conquest of the Air. New York, Thomas Nelson and Sons, 1910. Sm 8vo (5x7.5"), grey cloth with color embossing, 476 pages, approx 150 photos and line drawings. A classic that belongs in every aviation buff's library. Poor-fair, shaken, cover embossing light, spine cover worn top and bottom. Text block very good. Seldom seen in better condition; 112 years years old so difficult to expect more.