Map of the Early Lakes.
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- Map of the Early Lakes. Broken shading represents extension of the early lake epoch; solid shading, a lower stage of Iroquois Gulf before the birth of Lake Ontario; modern lakes, by dotted lines.
- Illustration from J. B. Mansfield, ed., History of the Great Lakes. Volume I, Chicago: J. H. Beers & Co., 1899
- Map of the GREAT LAKES during the IROQUOIS EPISODE
- J. H. Beers & Co.
- Place of Publication:
- Date of Original:
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- Copyright Statement:
- Copyright status unknown. Responsibility for determining the copyright status and any use rests exclusively with the user.
Maritime History of the Great Lakes