Burt, William Austin, 1792-1858Carleton, Guy H. (Surveyor)A survey map of the Western half of Portage Township in Mackinac County, Michigan, measured in 1841 and 1849.JPEG2000cbf433c7-1303-48d5-90fc-01aa793973bfMI-T044N-R012WengDepartment of Natural Resources8888-003Public44N 12W - Survey Map of Portage Township, Mackinac County, page 1 [Michigan]MapsMichigan--MackinacT044N-R012W1841