Boston harbor : United States-east coast, Massachusetts / U.S. Coast and Geodetic Survey.
- Chart number 246. Relief shown by contours. Depths shown by bathymetric tints, isolines and soundings. "Published at Washington D.C. Sept. 1934, by the U.S. Coast and Geodetic Survey, R. S. Patton, Director"--Lower margin. "Authorities: Surveys, 1892 to 1915; Surveys by Mass. authorities, to 1934; Surveys by U.S. engineers, to 1934; Surveys by U.S. Navy, to 1931." "No. 246"--Upper left corner. "Lights, beacons, buoys, and dangers corrected for information received to date of issue"--Lower margin. "Soundings in feet." Includes information on channels and tides.
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