The Anderson intelligencer. (Anderson Court House, S.C.) April 16, 1885
article mentions 18th Georgia
http://chroniclingamerica.loc.gov/lccn/sn84026965/1885-04-16/ed-1/seq-1/;words=18+Georgia+th
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Stan, you mentioned that "Uncle Frank" died in 1899 and is buried in a Baptist cemetery on Wade Green Road in Kennesaw.
I found him buried at Shiloh United Methodist Church Cemetery (Kennesaw,Cobb Co.)
Francis A. Boring
1830-1899
Co. A
18 GA. INF.
http://www.findagrave.com/cgi-bin/fg.cgi?page=gr&GSln=boring&GSfn=francis&GSmn=a.&GSbyrel=in&GSdyrel=in&GSob=n&GRid=17561437&df=all&