1881 photograph of the outlet to Lower Hadlock Pond. Back reads "This is probably in the outlet to Lower Hadlock, near Wasgatt Cove where there was once a mill."
William Dunbar , “Lower Hadlock Pond Outlet,” Mount Desert Island Historical Society, accessed March 12, 2025, https://mdihs.digitalarchive.us/items/show/19296.Item 19662