1934. 2012-03-28T20:22:06Z. 2015-10-21T15:21:46Z. United States. War Dept. Corps of Engineers. U.S. Lake Survey, Corps of Engineers. English. Public. Saint Clair, Lake (Mich. and Ont.) and Saint Clair River (Mich. and Ont.).
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1933. 2012-04-18T20:17:09Z. 2015-10-21T15:07:42Z. U.S. Lake Survey. U.S. Lake Survey, Corps of Engineers. English. Public. Sturgeon Bay and Lake Michigan Ship Canal (Wis.), Sturgeon Bay (Door County, Wis. : Bay), and Sturgeon Bay (Wis.).
1933. 2012-04-20T20:25:50Z. 2015-10-21T15:22:10Z. U.S. Lake Survey. U.S. Lake Survey, Corps of Engineers. English. Public. Wisconsin, Ashland, Washburn, and Chequamegon Bay (Wis.).