A chart exhibiting the normal course & velocity of the tidal current at ebb in Boston Harbor
Washington: Government Printing Office, 1851. Sea chart. Uncolored engraving. Image measures 7.5 x 9 inches. This fantastically detailed sea chart issued by the United States Coast Survey in 1851 beautifully depicts the Boston Harbor and tidal currents. It extends as far north as Nahant, as far south as Petticks Island, to Hull, and as far west as Boston.The map is in good condition, with minor toning. Alexander Dallas Bache (1806-1867) was an incredibly prolific surveyor, who worked as the superintendent..... More