71 Pa. Stat. § 1912
Whereas, Such report, together with maps, details of field work and descriptions of monuments erected, was filed in the office of the secretary of internal affairs, January twenty-nine, one thousand eight hundred and ninety-four, and a duplicate thereof filed with the proper authorities in the state of Delaware, which report was signed by the commissioners on the part of the commonwealth of Pennsylvania, and which report indicates that the line of the circle of New Castle was surveyed and re-established in substantially the same location as it originally had, and that enduring monuments were erected to indicate the location of the line of the circle, all in conformity with the provisions of the act of one thousand eight hundred and eighty-nine, authorizing the formation of the commission aforesaid.
71 P.S. § 1912