Aircraft woods: their properties, selection, and characteristics
This 1931 technical report on aircraft woods was produced by the NASA Technical Reports Server collection, which holds it as a historical engineering document drawn from aeronautical wood research. Its pictures are plain engineering charts, with scatter plots, multi-line graphs and a bell-shaped frequency curve plotted on gridded paper. A designer might take from them the clean, restrained look of early technical graphs, with tidy axes, labelled curves and grid-based layouts.
