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2007-09-25. The Fish of Lake Superior (页面存档备份,存于互联网档案馆) University of Wisconsin Sea Grant Institute. Retrieved on 2007-08-03. "Lake Superior." (页面存档备份,存于互联网档案馆)
Part 2: The Cuyuna Range Line Becomes Operational. The Soo (Appleton, Wisconsin: The Soo Line Historical and Technical Society). 1992-10, 14 (4): 13–29