Burt, William Austin, 1792-1858, Houghton, Douglass, 1809-1845, Sullivan, Adam D. (1841). 45N 24W - Survey Map of Forsyth Township, Marquette County, page 1 [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_2652d65d-a136-42c1-a866-5af530094c9e (map)