(Harbourton 19', 19', 30-11-a) across a brook W. of Hopewell, Hopewell Township, Mercer County, NJ. Louellen St. (becomes Lambertville Hopewell Rd.) W. 4.6 miles from jct with Broad St. in Hopewell, S. on Harbourton Rocktown Rd. 0.15 miles to the bridge on the E. side of the road at 1598. Between the road & house. Ask permission to visit. (N40 22.161 W74 50.833) Photo by Harry Hill 7-7-09.