Air forces and air-force moments at large angles of attack and how they are affected by the shape of the wing (1930)
NASA Technical Reports Server (NTRS) · leaf 23
Figs.8,9* 10 H.JUC.A* Technical Memoranda Ho . 573 … area. Jig.10 Lift, drag, moment ahout the leading edge, normal and tangential forces plotted against the angle of attack of monoplane wing of jig.9.
NASA Technical Reports Server (NTRS)
Internet Archive · NASA Technical Reports · Public domain (US government work). Free to use for anything.