Annual report - National Advisory Committee for Aeronautics
This is an annual report from 1915 by the United States National Advisory Committee for Aeronautics, printed in Washington for government and military readers interested in flight research. Its pictures are technical charts and plots: graphs of lift and drag coefficients against angle of attack, wind tunnel pressure contour maps, and labelled curves on gridded paper, drawn in plain black line on cream stock, useful to a designer for diagram layouts, data visualisation and grid-based graphics.
