Empirical corrections to the span load distribution at the tip
This is a 1937 NACA technical report by NASA Technical Reports Server, a government aeronautical research note on wing lift distribution, written for aerodynamic engineers and researchers. Its pictures are plain engineering graphs with thin black lines, dashed theoretical curves, and labelled data points plotted against semispan position and lift coefficient. A designer might take from them only the clean line-chart vocabulary of axes, tick marks, legends, and dashed-versus-solid curve styling.
