Chart of the Gulf Stream: Remarques Sur La Navigation De Terre-Neuve à New-York afin d'éviter Les Courrants et les bas-fonds au sud de Nantuckett et du Banc de George, 1783
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  Photo courtesy of Page Talbott |
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Paris
Georges Louis Le Rouge Engraving; H. 18 1/2 in. (47.0 cm), W. 24 in. (61.0 cm) Private Collection 
Engraved by a French mapmaker, this was commissioned by Franklin after his experiments confirmed the belief of New England seamen that travels to and from Europe differed in duration and in the temperature of the waters.
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