Allard, John P., Brink, John (Surveyor), Caukin, Volney W. (1838). 25N 08W - Survey map of Springfield Township, Kalkaska County [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_486d818c-57e8-4356-b57a-1c967f74bfd4 (map)