The prototype Waco QDC, NX11250, c/n 3454 at the Waco factory at Troy, OH, in February 1931. (Photo from the Walter M. Jefferies Collection).
The prototype Waco QDC, NX11250, c/n 3454 at the Waco factory at Troy, OH, in February 1931. (Photo from the Walter M. Jefferies Collection).