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Departure of Blanchard and Jeffries Balloon from Dover, January 7, 1785, January 1794
Crossing of the English Channel by Blanchard and Jeffries, 1785 (1890s). Frenchman Jean Pierre Blanchard and American Dr John Jeffries made the first aerial crossing of the English Channel in a
Dr John Jeffries, American balloonist, 1786. Jeffries (1744-1819) during a balloon ascent to investigate the atmospheric temperature