(Harbourton 18', 18', 30-11-b) 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. S. of the house. Ask permission to visit. (N40 22.157 W74 50.781) Photo by Harry Hill 7-7-09.