Burt, William Austin, 1792-1858, Burton, John W. (John Wear), 1915-2010, Wood, Abner B. (1846). 50N 28W - Survey Map of Champion Township, Marquette County [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_17562571-4a35-4ec6-9c22-c29c36ab1594 (map)