Burt, William Austin, 1792-1858, Burton, John W. (John Wear), 1915-2010 (1846). 41N 31W - Survey Map of Mastodon Township, Iron County, Page 2 [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_fbaf22ca-510f-400f-a51b-469046a70be5 (map)