**Southern Coast of Long Island From Montaukpoint to East Hampton 1877** This 1877 survey map documents the southern coastline of Long Island from Montauk Point to East Hampton, produced by the U.S. Coast Survey during the systematic charting of American waters. The detailed bathymetric soundings reveal the complex underwater topography that made these waters both treacherous for navigation and rich for maritime commerce. Printed with exceptional clarity, preserving the fine linework essential to nautical accuracy.