Air Conditions Close to the Ground and the Effect on Airplane Landings
This is a 1935 NASA technical report, issued in the United States, on wind and turbulence near the ground and how they affect airplane landings; its pictures are plain photographs of a biplane on a flat field and recorded wind-speed and wind-angle traces over 35 seconds. A designer could take from them the clean, documentary look of mid-century engineering reports, with dense line graphs, grid paper and small captioned photographs.
