Morris, J. O. (2003). Frontier forts of Pennsylvania, Maryland, Virginia, West Viginia & Ohio, 1740-1794, built by the French, English & Americans: A bibliography & finding aid (2nd ed.). Pittsburgh, PA (210 Princeton Ave, Pittsburgh 15229-1516): J.O. Morris.

Morris, Jean O. Frontier Forts of Pennsylvania, Maryland, Virginia, West Viginia & Ohio, 1740-1794, Built By the French, English & Americans: A Bibliography & Finding Aid. 2nd ed. Pittsburgh, PA (210 Princeton Ave, Pittsburgh 15229-1516): J.O. Morris, 2003.

Morris, Jean O. Frontier Forts of Pennsylvania, Maryland, Virginia, West Viginia & Ohio, 1740-1794, Built By the French, English & Americans: A Bibliography & Finding Aid. 2nd ed. Pittsburgh, PA (210 Princeton Ave, Pittsburgh 15229-1516): J.O. Morris, 2003.