found: Work cat.: Taylor, Blaine. Hitler's chariots. Volume 1, Mercedez-Benz G-4 cross-country touring car, c2009:t.p. (Mercedez-Benz G-4 cross-country touring car) p. 15 (57 G-4s manufactured by Daimler-Benz)
found: Lyon Air Museum website, Apr. 5, 2011(under Exhibits/Automobiles/1939 Mercedes-Benz: 1939 Mercedes-Benz model G4 Offener touring wagon; G4 touring wagon developed for the German army and produced from 1934 to 1939)
found: Seriouswheels.com, viewed Apr. 5, 2011(under M: 1939 Mercedes-Benz G4 Offroader; the G4)