Before revision: Daboll's trumpet were installed at the following during trials: Cape Ann Light-Thatcher's Island ..... " June 30, 1869 Execution Rock Light-Long Island Sound Jan'y 25, 1869 Manana Island-Monhegan Light Station April 4, 1870 Boston Light-Boston, Mass Oct. 29, 1871 Portland Head Light-Portland, Me Nov., 1871 Montauk Point Light-Long Island May 1, 1873 Highland Light-Cape Cod June 23, 1873History of American Steam Navigation, John H. Morrison, W. F. Sametz & CO., New York, 1908, pg 579 References Sources "Improved Fog Signal," New York Times, Oct. 26, 1866.
After revision: Daboll's trumpet were installed at the following during trials: Cape Ann Light-Thatcher's Island ..... " June 30, 1869 Execution Rocks Light-Long Island Sound Jan'y 25, 1869 Monhegan Light-Manana Island (ME) Station April 4, 1870 Boston Light-Boston, Mass Oct. 29, 1871 Portland Head Light-Portland, Me Nov., 1871 Montauk Point Light-Long Island May 1, 1873 Highland Light-Cape Cod June 23, 1873History of American Steam Navigation, John H. Morrison, W. F. Sametz & CO., New York, 1908, pg 579 References Sources "Improved Fog Signal," New York Times, Oct. 26, 1866.