[Scale 1:30,000]. LC Civil War Maps (2nd ed.), 117.15 Another copy with annotations. Harbor chart annotated in red to show the number and sectors of fire for guns situated at Oyster Point and Fort Hale, Connecticut. Guns at Oyster Point are numbered 1 to 5 and those at Fort Hale, 1 to 15. Information added to the chart probably reflects the situation during the Civil War. "Transferred from Office of Chf. Engr. Defenses of Washington, to Engr. Dept. Jan'y 1866." Description derived from published bibliography. Available also through the Library of Congress web site as raster image.
United States Coast Survey; Hassler, F. R.; Ferguson, James; Blunt, Edmund M. (Edmund March)
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