Burt, William Austin, 1792-1858, Burton, John W. (John Wear), 1915-2010, Carleton, Guy H. (Surveyor) (1846). 48N 32W - Survey Map of Spurr Township, Baraga County [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_4f8c3596-af1c-4745-866b-4882700ece04 (map)