Crashed into the Maude Bridge in Baghdad on 2 May 1929. One of the crew was killed. This was one of a flight of three Wals going to the Dutch East Indies by air. Photo from: Harvard University Library

A real oddball - a Heinkel HD.22 (not He 22) trainer bought by the US Army for use by the assistant military attaché for Aviation in Berlin, Maj George E A Reinburg. On photo 302347 this plane can be spotted in a hangar at Tempelhof in 1933, wearing horizontal rudder stripes and its assigned serial number 30-420. This seaside photo is assumed taken at the Heinkel works at Hohe Düne, Warnemünde. Photo from: ETH-Bibliothek Zürich

Willy Messerschmitt designed the four-seat BFW M 18 at the request of Theodor Croneiss and his North Bavarian Airlines (NOBA) acquired a fleet of 19 examples. D-1347, D-1405 Gera and D-1365 were likely pictured at NOBA's base, the former Fürth / Nuremberg - Atzenhof airport. Rob Mulder's European Airlines website has a comprehensive article about this interesting company. Photo from: ETH-Bibliothek Zürich

Wapitis had only just been delivered to the RAAF when A5-4 made an appearance at an air pageant at Essendon. It flew with the air force for 10 years until crashing at Mount Buninyong, Victoria on December 12, 1939. The RAAF received 44 Wapitis but one was damaged in a wharf accident and never entered service. Photo from: National Library of Australia