Burt, William Austin, 1792-1858, Burton, John W. (John Wear), 1915-2010, Carleton, Guy H. (Surveyor) (1846). 47N 32W - Survey Map of Spurr Township, Baraga County [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_04b80e2c-ecdf-457e-8d58-afe473359882 (map)