Document, 1 sheet, copy of map "Bedrock Geology of Mount Desert Island, Maine" by Carlton A. Chapman, 1962,1970, showing types of rock found at various places.
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Citation
“Geology of MDI,” Great Cranberry Island Historical Society, accessed April 29, 2024, https://gcihs.digitalarchive.us/items/show/592.Catalogue # 2003.81.583
