Burton, John W. (John Wear), 1915-2010, Clason, Lewis (1837). 19N 06E - Survey Map of Au Gres Township, Arenac County, page 1 [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_e0420c45-1617-4df5-b31f-255159b9875b (map)