Joseph, L. J., & Joseph, S. E. J. (2014). The tombstones of Oak Hill Cemetery: Established 1854, city of Youngstown, Mahoning County, Ohio. [Place of publication not identified]: Mahoning County Chapter of the Ohio Genealogical Society.

Joseph, Louis J., and Sarah E. Jay Joseph. The Tombstones of Oak Hill Cemetery: Established 1854, City of Youngstown, Mahoning County, Ohio. [Place of publication not identified]: Mahoning County Chapter of the Ohio Genealogical Society, 2014.

Joseph, Louis J., and Sarah E. Jay Joseph. The Tombstones of Oak Hill Cemetery: Established 1854, City of Youngstown, Mahoning County, Ohio. [Place of publication not identified]: Mahoning County Chapter of the Ohio Genealogical Society, 2014.