Annual report - National Advisory Committee for Aeronautics
This is an annual report issued in 1915 by the United States National Advisory Committee for Aeronautics, a government body, printed in Washington for official circulation. Its pages are technical engineering charts: aerofoil and wing force curves, engine performance lines plotted against revolutions per minute, and dense multi-line graphs of aircraft stability. A designer could borrow the restrained grid-and-curve vocabulary of early engineering plots for diagrammatic graphics.
