1. East end of Lake Superior : from Cape Gargantua, Ont. to mouth of Big Two Hearted River, Mich., including Whitefish Bay and head of St. Marys River Yale Public content 1934. 2012-04-04T14:06:22Z. 2015-10-21T15:21:48Z. U.S. Lake Survey. U.S. Lake Survey Office. English. Public. Superior, Lake, Saint Marys River (Mich. and Ont.), and Superior, Lake.