National Museum of American History, Behring Center

Lighthouse Postcards

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Straitsmouth postcard face - click to enlarge

Straitsmouth postcard obverse - click to enlarge

Locate on NOAA nautical chart


State: MA
Year established: 1835
Latitude: 42 deg 39 min 44 sec N
Longitude: 70 deg 35 min 17 sec W
Height above sea level: 46 feet

Original construction:
19-foot brick tower

1850: 24-foot octagonal stone tower
1896: present 37-foot brick tower

automated in 1967

Light characteristic:
flashing green every 6 seconds visible for 6 nautical miles; fog signal, 1 blast every 15 seconds

More information:
Office of the Light House Board, List of Lights and Fog Signals on the Atlantic and Gulf Coasts of the United States, (Washington, DC: GPO, 1895), pp. 28-29