1934. 2012-03-28T13:52:41Z. 2015-10-21T15:21:45Z. United States. War Dept. Corps of Engineers. U.S. Lake Survey. English. Public. Ontario, Lake (N.Y. and Ont.).
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1934. 2012-03-30T19:12:23Z. 2015-10-21T15:21:48Z. United States. War Dept. Corps of Engineers. U.S. Lake Survey. English. Public. Kewaunee (Wis.), Two Rivers (Wis.), and Michigan, Lake.
1934. 2012-04-30T17:06:14Z. 2015-10-21T15:22:11Z. United States. War Dept. Corps of Engineers. U.S. Lake Survey. English. Public. Waukegan (Wis.), Port Washington (Wis.), and Michigan, Lake.
1934. 2012-03-30T20:26:22Z. 2015-10-21T15:21:48Z. U.S. Lake Survey. U.S. Lake Survey. English. Public. Michigan, Lake and Michigan, Lake.
1934. 2012-03-27T19:48:03Z. 2015-10-21T15:21:45Z. United States. War Dept. Corps of Engineers. U.S. Lake Survey. English. Public. Ontario, Lake (N.Y. and Ont.).
1866. 2012-05-03T16:14:49Z. 2014-10-06T19:20:17Z. U.S. Lake Survey. U.S. Lake Survey. English. Public. Michigan, L'Anse., L'Anse (Mich.), Keweenaw Bay (Mich. : Bay), Portage (Mich.), and Superior, Lake.
1865. 2012-04-20T19:47:07Z. 2015-10-21T15:22:10Z. U.S. Lake Survey. U.S. Lake Survey. English. Public. Great Lakes Region (North America) and Portage Lake (Houghton County, Mich.).
1932. 2012-04-19T15:33:59Z. 2015-10-21T15:22:09Z. U.S. Lake Survey. U.S. Lake Survey. English. Public. Michigan, Lake., Wisconsin, Racine, Michigan, Lake, and Racine (Wis.).
1934. 2012-03-26T16:03:45Z. 2015-10-21T15:21:44Z. U.S. Lake Survey. U.S. Lake Survey. English. Public. Ontario, Lake (N.Y. and Ont.).