Johnston, William, 1804-1891 (1827). 39N 01W - Survey Maps of Bois Blanc Island and Mackinac (Michillimackinac) Island, Mackinac County, Page 4 [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_49bb66d6-a967-4e79-939c-418540411ce8 (map)