Burt, William Austin, 1792-1858, Mullett, John, 1786-1862 (1840). 41N 02E - Survey Map of Clark Township, Mackinac County, page 1 [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_a5f66ff3-b089-48a5-9b82-6e8196b0479f (map)