Chart of the Gulf Stream authorized by Benjamin Franklin and Timothy Folger. Published in London ca. 1768. Original title: "New and exact chart of Mr. E. Wrights projection, rut. Mercators chart, con. ye sea coast of Europe, Africa & America, from ye Isles of Orkney to Cape Bona Esperance & Hudsons Bay to ye straits of Magellan, according to ye observations of Capt. E. Halley, fellow of ye R.S." Includes text and inset of "The sea coast from Rio de la Plata to Terra del Fuego &c."