N.J. Stat. § 52:28-13
Second. The monumental marks by which said boundary line shall hereafter be known and recognized are hereby declared to be; first, the original monuments of stone erected in seventeen hundred and seventy-four, along said line by the commissioners aforesaid, as the same have been restored and re-established in their original positions by Edward A. Bowser, surveyor on the part of New Jersey, and Henry W. Clarke, surveyor on the part of New York, duly appointed by the parties hereto; second, the new monuments of granite erected by the aforesaid surveyors at intervals of one mile, more or less, along said line, and numbered consecutively, beginning from the Hudson river, and severally marked on the northerly side with the letters N. Y., and on the southerly side with the letters N.J.; third, the monuments of granite erected by the aforesaid surveyors at intervening points on said line at its intersection with public roads, railroads and rivers, and severally marked by them on the northerly side with the letters N. Y., and on the southerly side with the letters N. J.; and fourth, the terminal monuments erected at the western terminus of said line at the confluence of the Delaware and Navesink rivers, and the terminal monument erected on the brow of the rock called the Palisades, near the eastern terminus, and the rock lying and being at the foot of the Palisades on the bank of the Hudson river, and marked as the original terminal monument of said line established in seventeen hundred and seventy-four, as the same are described in a joint report made to the parties hereto by Elias W. Leavenworth, commissioner on the part of New York, and George H. Cook, commissioner on the part of New Jersey.
N.J.S. § 52:28-13