Douglas M-2 Mailplane Single-engine Single-seat Biplane, U.S.A.
Archive Photos 1
Douglas M-2 (NC150, s/n 338) on display (2/20/2004) at the National Air & Space Museum, Washington, DC (2/20/2004 Photo by Jim Hough)
References
Skytamer Images (Skytamer.com)Est. 1998