Experiments on airfoils with trailing edge cut away
This NACA Technical Memorandum from 1927, issued by the National Advisory Committee for Aeronautics, reports wind-tunnel experiments on airfoil sections with the trailing edge cut away, aimed at engineers and aerodynamics researchers. Its pictures are plain line graphs of lift and drag curves for airfoils 508 and 460, plus dimensioned profile drawings with a fine grid and labeled chord measurements, showing crisp technical plotting that a designer could borrow for minimal diagrammatic charts or wing-shape motifs.

