From Michigan (In 5 layers) Depicts: 1871 Last modified 22 days ago. 14 control points.
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Preliminary map to a geological survey of the north shore of Lake Superior, Ontario, Dominion of Canada / Compiled and drawn from official documents and personal observations by Henry F.Q. D'Aligny, geologist & mining engineer.
From Michigan (In 5 layers) Depicts: 1871 Last modified 22 days ago. 14 control points. |
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Tiles base URL: http://maps.nypl.org/warper/maps/tile/34678/{z}/{x}/{y}.png
