Crain, Dewitt A.A survey map of an island in the Brule River, Mastodon Township in Iron County, Michigan, measuredJPEG200011385307-53c1-4837-868e-22d5859d18d9MI-T041N-R031WengDepartment of Natural Resources8888-003Public41N 31W - Survey Map of Mastodon Township, Iron County, Page 1 [Michigan]MapsMichigan--IronT041N-R031W1965