Property map of Pretty Marsh, from Big Round Pond to Bartlett Narrows, Tremont line and Squid Cove. No date given. Prepared for Town of Mount Desert by James Sewall Company.
“Property Map of Pretty Marsh (undated),” Mount Desert Island Historical Society, accessed November 21, 2024, https://mdihs.digitalarchive.us/items/show/13694.Item 14060