A Chart of the Gulf Stream
This map, from the Peter Force Map Collection at the Library of Congress, was created by the Philadelphia engraver James Poupard. It was the third in a series featuring a chart of the Gulf Stream. The latter was well known to Spanish ship captains, who relied on it to sail from the Americas to the Iberian Peninsula, but there were no universal charts or maps due to Spanish secrecy. This map originally was sketched by Timothy Folger, a Nantucket fisherman and a cousin of Benjamin Franklin, who conceived the map ...