Automatic Stability of Airplanes
This is a NASA technical report on automatic stability of airplanes, dated 1932, with no named illustrator and no stated audience beyond aeronautical engineers. Its single picture is a set of engineering plots with time in seconds on the horizontal axis and perturbation quantities such as velocity, pitch angle and their rates on paired vertical axes, drawn as solid and dashed curves on a fine grid. A designer could borrow the clean instrument-chart look: thin black curves on graph paper, labelled axes with units, and stacked panels of small multiples.
