Pole signal with tin cone for reflecting sunlight.
Constructed by survey crews under direction of Ferdinand Hassler.
Sketch by Assistant John Farley - view looking to south across Long Island Sound
Image ID: theb2457, NOAA's Historic Coast & Geodetic Survey (C&GS) Collection
Location: Connecticut shore
Photo Date: 1837
Credit: NOAA John Farley collection
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of the U.S. Department of Commerce, National Oceanic & Atmospheric
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November 10, 2017