Adair, George E., Burt, William Austin, 1792-1858, Searles, Zelotes B. (1841). 47N 20W - Survey Map of Au Train Township, Alger County [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_5e4af77b-b17b-4f6e-9c44-a644f5c753f8 (map)