Dr John Jeffries, American balloonist, 1786. Jeffries (1744-1819) during a balloon ascent to investigate the atmospheric temperature. On 7 January, 1785, Jeffries and French balloonist Jean Pierre Blanchard made the first successful balloon flight across the English Channel. After a pastel drawing by John Russell (1745-1806). From The Connoisseur Volume XXIX [Otto Limited, London, 1911]
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