On the theory of laminar boundary layers involving separation
A 1934 NASA technical report on laminar boundary layers and flow separation, issued by the NASA Technical Reports Server for aerodynamics researchers. The pictures are engineering graphs: curves of velocity and stream-function quantities plotted against axes, with dashed guide lines marking key points, and a set of straight lines fanning out from a common point. A designer might take their clean, sparse line-plot style, with solid and dashed curves on white ground, as a model for technical diagrams.
