51N 41W - Survey Map of Carp Lake Township and Ontonagon Township, Ontonagon County: Michigan
Description:
A survey map of a northeastern portion of Carp Lake Township and a western portion of Ontonagon Township in Ontonagon County, Michigan, measured in 1845 and 1846.
Creator:
Burt, William Austin, Higgins, Hiram, and Hubbard, Bela