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Columbiana County Chapter of the Ohio Genealogical Society

Mahoning Valley Historical Society

Youngstown. Serving Mahoning, Trumbull, Columbiana, parts of Stark & Portage counties in Ohio and parts of Lawrence and Mercer counties in Pennsylvania.

Salem Historical Society

Salem.

Tri-State Genealogical & Historical Society

Serving Hancock County, West Virginia; Columbiana County, Ohio; and Beaver County, Pennsylvania.