Commencing at a point on the boundary line of the city of Pittsburg, and running by way of Sharpsburg, Aspinwall, and Tarentum to a point on the dividing line between Allegheny and Butler counties; thence to a point on the dividing line between Butler and Armstrong counties; thence to Freeport; thence over route sixty-nine into Westkit, on the Allegheny River, opposite Kittanning, Armstrong County.
36 P.S. § 1041