Long Island Sound (N.Y. and Conn.)
Long Island Sound (N.Y. and Conn.) -- history
Long Island Sound (N.Y. and Conn.) -- Maps
Long Island Sound (N.Y. and Conn.) -- Environmental conditions
Long Island Sound (N.Y. and Conn.) -- Estuarine area conservation
Long Island Sound (N.Y. and Conn.) -- Estuarine Ecology
Long Island Sound maps -- NYPL's Digital Collections
New York Harbor Water Quality Results Maps
Office of the Coast Survey: Chart Locator
Controlling Depth Reports and Surveys -- U.S. Army Corps of Engineers