Marcel Besson wing sections
A 1923 NASA technical report collecting wing section studies, probably by the aeronautical researcher Marcel Besson, for aeronautical engineers and aerodynamicists. Its pictures are plain line graphs of lift and drag coefficient polars, with angle-of-attack labels, a profile outline, and a curve of moment against lift, drawn in black ink on white. A designer could take the sparse graph layouts and tick-marked axes as a model for technical diagrams.
