Burt, William Austin, 1792-1858, Burton, John W. (John Wear), 1915-2010 (1846). 43N 31W - Survey Map of Mansfield Township, Iron County [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_f2479a7d-be57-4ebc-b74e-d41d1219d01d (map)