Providence Harbor, Rhode Island 1901

Relief shown by hachures. Depths shown by gradient tints and soundings. ; Includes text and tables. ; "Plate no. 2683" -- top center margin. ; "Electrotype copy no. 2, U.S.C. & G.S." ; "Triangulation executed between 1843 and 1863; topography executed between 1865 and 1874; hydrography executed between 1865 and 1878; corrections from surveys by the U.S. Corps of Engineers to Feb. 1906; corrections from surveys by the city engineer to 1900." ; "(Date of first publication 1865)."Color1:10,00