National Museum of American History, Behring Center

Lighthouse Postcards

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Fort Gratiot postcard face - click to enlarge

Fort Gratiot postcard obverse - click to enlarge

Locate on NOAA nautical chart

Fort Gratiot

State: MI
Year established: 1825
Latitude: 43 deg 0 min 23 sec N
Longitude: 82 deg 25 min 21 sec W
Height above sea level: 82 feet

Original construction:
32-foot structure, 18-feet in diameter at the bottom, and 9-feet in diameter at the top

1829: 65-foot white painted brick tower with red trim replaced original destroyed by storm.
1861: white conical brick tower extended to current 86 feet

automated in 1933; active aid to navigation; Coast Guard housing

Light characteristic:
flashing green every 6 seconds, visible for 18 nautical miles

More information:
U.S. Department of the Interior National Park Service Cultural Resources with Candace Clifford as Project Manager. Inventory of Historic Light Stations, (Washington, DC: Government Printing Office, 1994), p. 172
Roberts, Bruce and Jones, Ray, Great Lakes Lighthouses Ontario, Erie, Huron, Michigan, and Superior, (Old Saybrook, CT: The Globe Pequot Press, 1994) p. 58
Berger, Todd R., Lighthouses of the Great Lakes, (Stillwater, MN: Voyageur Press, 2002), p. 132
U.S. Department of Homeland Security / United States Coast Guard, Light List, Volume VII, Great Lakes and the St. Lawrence River above the St. Regis River, (Washington, DC: GPO, 2004), p. 102