Clark, Robert Jr.A survey map of Mason Township in Cass County, Michigan, drawn in June 1828.JPEG2000a3316fb4-f2f9-43d1-b9cc-a923f06e0745MI-T008S-R014WengDepartment of Natural Resources8888-003Public08S 14W - Survey Map of Mason Township, Cass County [Michigan]MapsMichigan--CassT008S-R014W1828