"Safety" fuels for aircraft engines
A 1929 NASA technical report on safer fuels for aircraft engines, issued as a technical paper for aeronautical engineers and researchers. Its two charts plot vapor tension against temperature and fractioning percentage against temperature for lettered fuel samples a through l, with dashed and dotted reference curves over grid paper. A designer could take the clean scientific graph style, the lettered curve labels, and the restrained grid layouts as models for technical data visualization.
