The Choice of Wing Sections for Airplanes
A 1921 NASA Technical Reports Server document on choosing wing sections for airplanes, a technical report with no stated audience beyond aeronautical engineers. The one picture is a large hand-ruled graph sheet of curved plotted lines on a grid, with a key of labels in the upper right, showing aerodynamic performance curves that a designer could borrow as abstract line work for data-driven or engineering-themed layouts.
