National Museum of American History, Behring Center

Lighthouse Postcards

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Outer Island postcard face - click to enlarge

Outer Island postcard obverse - click to enlarge

Locate on NOAA nautical chart

Outer Island

State: WI
Year established: 1874
Latitude: 47 deg 4 min 36 sec N
Longitude: 90 deg 25 min 0 sec W
Height above sea level: 130 feet

Original construction:
80-foot Italianate architectural style conical brick tower

1875: original fog signal building was replaced by a structure at the top of the cliff
1878: a third fog signal building, virtually identical to the second, was built at clifftop, adjacent to its twin
1900: the two fog signal buildings were renovated and combined into a single structure, assuming the current form

electrified in the late 1930s; automated in 1961; active aid to navigation

Light characteristic:
flashing white every 10 seconds, visible for 15 nautical miles

More information:
Roberts, Bruce and Jones, Ray, Great Lakes Lighthouses Ontario, Erie, Huron, Michigan, and Superior, (Old Saybrook, CT: The Globe Pequot Press, 1994) p. 108
Berger, Todd R., Lighthouses of the Great Lakes, (Stillwater, MN: Voyageur Press, 2002), p. 128
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. 150