Douglas Aircraft Company. Model 8A-3N, Report no. 588, Airplane vibration characteristics Douglas Aircraft Company. Model 8A-3N, Bill of material Douglas Aircraft Company. Report #1064, Model 8A-3N (#548) actual weight and balance, November 156 1939 Douglas Aircraft Company. Process bulletins Douglas Aircraft Company. Supplimantary numerical drawing list model 8A-3N Douglas Aircraft Company. Numerical drawing list, Model 8A-3N airplane Douglas Aircraft Company. Report #1063, Model 8A-3N (#540), Actual weight & balance, Nov. 10, 1939 Douglas Aircraft Company. Report #1049, Actual weight and balance, Model 8A-3N (ship #531), Aug. 21, 1939 Britain and her army, 1509-1970 : a military, political and social survey / Correlli Barnett Handleiding tot den Pionier-arbeid voor de leerlingen der militaire scholen, [etc.] / C.M.A. Douglas Meer dan duizend vliegtuigen 1490-1972 / tekeningen en beschrijvingen van Douglas Rolfe ; historische hoofdstukken door Alexis Dawydoff ; vert. en bew. [uit het Engels] … Fokker-Douglas DC-2 : het eerste metalen verkeersvliegtuig van de K.L.M. / door Hugo Hooftman