The Northrop Delta was a derivative of the Gamma mailplane, its wider fuselage seating eight passengers.. It was unsuccesful as new regulations killed single-engined airliners in the USA in 1934. SE-ADI is seen in front of Schiphol's Hangar B with KLM's first DC-3, PH-ALI Ibis. Photo from: Amsterdam City Archives
This photo was added on 14 April 2019, and has since been viewed 43 times.