The Dyle and Bacalan "DB 70" commercial airplane (French) : an all-metal high-wing monoplane
A 1930 NASA Technical Reports Server record of a French technical report on the Dyle and Bacalan DB 70, an all-metal high-wing monoplane commercial transport aircraft. The pictures are engineering drawings with side, plan and front views plus photographs of the aircraft on the ground, showing its wing, engines and cabin layout for a designer studying early aviation draughtsmanship.
