the surveys for this chart were made under the direction of A.D. Bache and Benjamin Peirce ; triangulation by G.A. Fairfield ; topography by F.W. Dorr ; hydrography by J.S. Bradford and F.F. Nes. Depths shown by soundings and isolines. "The soundings are expressed in feet and show the depth at an average stage of water." "Issued August 1878." Includes notes and table of lighthouses. Oriented with north to the upper right. "No. 144²"--Top left margin. "(Date of first publication 1874)."
Creator:
Bache, A. D. (Alexander Dallas), 1806-1867 and Peirce, Benjamin, 1809-1880
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