Public domain
Weather signals recorded. add weather device. Washington, D.C., Sept. 13. By means of this chronograph, Dr. L.V. Astin records the weather signals sent down from the radiometeorograph attached to the balloon as it soars anywhere from 9 to 11 miles in the upper air. 9/13/37
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Credit lineWeather signals recorded. add weather device. Washington, D.C., Sept. 13. By means of this chronograph, Dr. L.V. Astin records the weather signals sent down from the radiometeorograph attached to the . 1937-01-01. Harris & Ewing. Harris & Ewing Collection, Library of Congress. Public domain.
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