London, UK: Putnam, 1997. First Edition. Hardcover. 4to (28 x 21 cm). 264 pp. Blue cloth covers with silver gilt titles to spine. Text block tight and unmarked. Unclipped DJ with illustration of Stearman and DC-3 to front panel, black titles to front and spine. In Mylar. More about Biplane to monoplane: aircraft development 1919-39