Langley, S. P. (Samuel Pierpont), 1834-1906 · Washington, Smithsonian institution · leaf 42
jQh36" a/*" 38" as™ 40'" Wind velocities observed at Smithsonian Institution February 20,1893, with a Robinson anemometer (aluminum cups) registering every five revolutions. Abscissae = Time. Ordinates = Wind velocities in miles per hour.
Winds · Aeronautics
Internet Archive · Cornell University Library · Public domain (published before 1931). Free to use for anything.
