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Citation Info Foster, J. W. (John Wells), 1815-1873. Hill, S. W. (Samuel Worth), 1815-1889. P.S. Duval & Co.. Schlatter, Wm. (William). Whitney, J. D. (Josiah Dwight), 1819-1896. Geological map of Keweenaw Point, Lake Superior, Michigan; by J. W. Foster & J. D. Whitney; S. W. Hill and W. Schlatter, assistants.. [JPEG]. Retrieved from https://geo.nyu.edu/catalog/8880dabc-8d61-4fed-806d-55fbd0a40610