Tests for the determination of the stress condition in tension fields
This is a 1936 NASA technical report, collected from NASA Technical Reports Server, presenting experimental test results for determining stress conditions in aircraft tension fields (thin web panels in plate girders). The pictures are engineering graphs: plotted data points with fitted curves, labelled axes in Greek-letter notation, and small legend tables, on a grid-ruled background. A designer might take from them the restrained look of technical charts, with clean line curves, dotted data markers, and ruled coordinate grids usable as visual texture or diagram styling.
