ダグラス クラウドスター II
↑ Francillon 1979, pp. 372–377.
1 2 3 4 5 Francillon 1979, pp. 432–434.
↑ Francillon 1979, pp. 714–715.
↑ "Tail-Pusher Plane Cruises 200 M.P.H." Popular Mechanics, March 1947, p. 103.
1 2 3 "Douglas numeric, and A thru C." Aerofiles. Retrieved: November 18, 2010.
↑ "Here and There: Abandoned." Flight, August 28, 1947, p. 220.