Brookfield, Noah, Mullett, John, 1786-1862, Sibley, Sylvester (1838). 18N 16W - Survey Map of Custer Township, Mason County [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_fcf8d7e4-1df7-45a5-870b-89c91f777c72 (map)