CHAPTER XXII CHICAGO (1893)

[Monte Davis]

>[KM] It was strict grid with no allowance for geography other than for
large bodies 
>of water, and replaced the hodge-podge system that existed out east...
Township 
> No. 7 north, of range No. 22 east... 

Some remote corners of the east (e.g. Maine, calved from Massachusetts in
1820) took part in the New Grid Order. Drive north of Bangor on US 95, where
the incorporated townships get sparse, and you'll start seeing the  signs:
"Entering T2 R9"...