The Northrop Delta was an American single-engined passenger transport aircraft of the 1930s. Closely related to Northrop's Gamma mail plane, 13 were produced by the Northrop Corporation, followed by 19 aircraft built under license by Canadian Vickers Limited.
Northrop Delta
Northrop Delta 1B in Mexican service with Aerovias Centrales
Northrop Delta 1D flown by the Richfield Oil Company
RCAF Canadian Vickers-built Northrop Delta Mk.I
The Northrop Gamma was a single-engine all-metal monoplane cargo aircraft used in the 1930s. Towards the end of its service life, it was developed into the A-17 light bomber.
Northrop Gamma
The Polar Star on display at the National Air and Space Museum
Workers at the CAMCO plant at the Jianqiao Aerodrome standing before the assembly of a Gamma 2E; circa 1936
Jacqueline Cochran's Northrop Gamma 2G with Curtiss Conqueror V-12 engine