Manufacturer: Douglas (United States)
Type: Airliner and transport aircraft
First flight: 11 May 1934
1. Douglas C-33 cockpit (S/N 33-70, the first C-33 built). Photo taken on March 9, 1937.
Source unknown
2. Douglas C-41. The sole C-41 was a VIP aircraft for Air Corps Chief Oscar Westover (and his successor Hap Arnold ). Although supplied against a C-39 order it was not a DC-2 derivative but in fact a DC-3-253 fitted with two 1,200 hp (890 kW) Pratt & Whitney R-1830-21 engines.
U.S. Air Force photo
3. Douglas C-39 interior cockpit center view (S/N 38-515).
Source unknown
