N.Y. State Law § 8: Maintenance of monuments

§ 8. Maintenance of monuments. The commissioner of transportation, in

cooperation with persons duly authorized by the adjoining state, shall

cause the monuments erected, or to be erected, as boundaries of the

state, to be maintained, and cause suitable monuments to be set wherever

such are now lacking at the points where such state boundary is

intersected by the boundary of any towns or counties of this state, or

by any highway.