I don't know of any kin who lived in Greene County, Missouri (Springfield area). However, I wish I did.
The Springfield Library has a great collection of digitized documents.
Including the White River Valley Historical Quarterly (1961-1988, 1991-1998)
Indexes to a variety of Greene County Records
Index to Alms House Records (1875-1955)
Index to Coroner's Records (1875-1972)
Abstracts of Circuit Court Record Books (1833-1866)
Divorce Records Index (1837-1950)
Justice of the Peace Docket Books Index (1835-1885)
Naturalization Records Index (1868-1906)
Stray Records Index (1833-1913) [Records of stray livestock]
And the Turnbo Manuscripts by Silas Claiborne Turnbo 1844-1925."a collection of approximately eight hundred short tales, stories and vignettes that reflect life along the White River Valley in northwest Arkansas and southwest Missouri during the latter half of the 19th century."
There's more too. Collections of photographs, postcards, maps, and local histories.