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If you are interested in this One Place Study, I welcome you to this page. This study is starting with the township of Buffalo Hart located in Sangamon County, Illinois and is using the Book 

Inter-state Publishing Company (Chicago, Ill.). 1881. History of Sangamon County, Illinois; together with sketches of its cities, villages and townships ... portraits of prominent persons, and biographies of representative citizens. History of Illinois. Chicago: Inter-state Pub. Co.

as a jumping off point.  Of course these are all hints and sources will need to be uncovered. This is being recorded on WikiTree:

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We are also registered oneplacestudy.org.  Since the One-Place study conception began in the UK, they have opened up to US and are adding US sources for research in the US.  So patience is needed they are working on it.
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