Burt, William Austin, 1792-1858Burton, John W. (John Wear), 1915-2010Martin, Elias C.A survey map of the southwest corner of Duncan Township in Houghton County, Michigan, measured in 1847 and 1851.JPEG2000f865a84f-f4fa-44fa-9b6e-ba09ddba6f18MI-T047N-R037WengDepartment of Natural Resources8888-003Public47N 37W - Survey Map of Duncan Township, Houghton County [Michigan]MapsMichigan--HoughtonT047N-R037W1847