Burt, William Austin, 1792-1858, Mullett, John, 1786-1862 (1840). 43N 01W - Survey Map of St. Ignace Township, Mackinac County [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_ad1fb2c1-6315-474d-8dc6-3ee151f674b5 (map)