Aviation - Literature

Lot 1061 limit € 20

2 volumes in total, 1 x "At 16,000 meters. My journeys into the stratosphere" by August Piccard, richly illustrated, Zurich: Swiss Aero-Revue, oJ, 1 x "Adventures in the air. The advances in airship travel in free balloons, airships and Plane" by Walter Heichen, Berlin et al.: Phönix-Verlag, 1912, decorated full cloth bindings, signs of age and wear (amongst others stained edges, edges damaged)