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 EMZ Euro Metaal Zaandam. Eurometaal en 25 jaar Europers EMZ Euro Metaal Zaandam. Production program, Eurometal, .50" ammunition Electrical Engineering Ohio State University. Helical beam antenna Eltro. IR-Ziel- und Beobachtungsscheinwerfer, Typ ELTRO SW 25-150
