A survey map of Beaver Township in Newaygo County, Michigan. The township lines were originally measured in 1838, but the southern boundary of Section 35 was remeasured in 1857. The subdivision lines were surveyed in 1856.
A survey map of the western half of Beaver Creek Township in Crawford County, Michigan. The township lines were measured in 1836; the eastern township boundary and the subdivision lines were re-surveyed in 1852.