Date: 2012-01-10 02:00:00Geography of Michigan Michigan Upper Peninsula of Michigan United States Douglass Houghton Bela Hubbard Houghton Michigan Michigan Geological Survey Houghton Amos Eaton Keweenaw Peninsula Henry Schoolcraft | | Part of the Geologic Map of the Middle and Western States published in Natural History of New York, Part IV, Geology by James Hall 1843, Albany New York. Hall stated, “Dr. Houghton, State Geologist of Michigan, has obAdd to Reading ListSource URL: mi.aipg.orgDownload Document from Source Website File Size: 1,29 MBShare Document on Facebook
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