Relief shown by contours, spot heights, and bathymetric isolines.; Surveyed in 1925. Entire area mapped is below sea level.; Control by U.S. Geological Survey. Datum is mean sea level. North American datum.; 5000 yard grid based upon U.S. zone system, F.
91 x 91 Centimeters
Scale 1:62,500 ;
General Map Collection
Geological Survey (U.S.)
Dept. of the Interior, U.S. Geological Survey (Washington, D.C)
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