Wondering if anyone has access to land record information in Calhoun County.

I have an Anson Turner of Erie Co., NY who purchased land on Sept. 10, 1838 in Kalamazoo Co.,MI and then on May 1, 1839 in Calhoun Co., MI. I am guessing these may have been in bordering townships. Unfortunately I haven't been able to find a township map to tell me which these might be. The BLM records gives me this basic info, though.

What I am looking to confirm is the sale of this property. By the 1840 census, Anson and his wife are enumerated in Geneva, Walworth County, WI where they reside also in 1850.

Any chance anyone has access to records or platt maps of these years to at least confirm that this Anson Turner is indeed gone from MI by 1840?

Anson b. abt. 1815 in NY; wife Levinah Van Valin b. 1820 in NY; m. 1836.