Burt, William Austin, 1792-1858, Burton, John W. (John Wear), 1915-2010, Mellen, Harvey (1846). 46N 27W - Survey Map of Tilden Township, Marquette County [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_7de4a2ff-c0bd-4e4f-a9aa-76d8e0e8024d (map)