Hodgson, John, Lyon, Lucius, 1800-1851, Sibley, Sylvester (1830). 28N 07W - Survey Map of Rapid River Township, Kalkaska County [Michigan]. Department of Natural Resources. https://michigan.access.preservica.com/uncategorized/IO_9c19d98f-1ebc-4eb9-9799-c56e474297ef (map)