Launching a "ballon-sonde", probably at St. Louis. The French were the first to
use small balloons filled with hydrogen to carry meteorological instruments
In: "The Principles of Aerography" by Alexander McAdie, 1917. Page 13.
Image ID: wea01137, NOAA's National Weather Service (NWS) Collection Location: Missouri, St. Louis Photo Date: 1905 Circa