Some Ideas on Racing Seaplanes
This NACA Technical Memorandum from 1932, issued by the US National Advisory Committee for Aeronautics, sets out engineering drawings of racing seaplanes and aircraft designs for aeronautical engineers and researchers. The pictures are plain line drawings with three-view orthographic plans, side elevations, and wing and strut cross-sections, showing airframe structure in clean, schematic detail that a designer could use for streamlined, mechanical, or vintage technical-diagram graphics.
