Brookfield, Noah, Mullett, John, 1786-1862, Sibley, Sylvester (1838). 18N 14W - Survey Map of Sweetwater Township, Lake County [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_49d4eb9e-3178-4e69-9671-383423cf6551 (map)