Burt, William (Surveyor)Mullett, John, 1786-1862A survey map of the Eastern third of Corwith Township in Otsego County, Michigan, measured in 1840 and 1850.JPEG2000d122db54-b850-49de-ac80-eacf41e0f420MI-T032N-R001WengDepartment of Natural Resources8888-003Public32N 01W - Survey Map of Corwith Township, Otsego County [Michigan]MapsMichigan--OtsegoT032N-R001W1840