Historical Marker
The Old Iron Works
Historical marker location:
Whippany, New Jersey
( Marker is at the intersection of Whippany Road and Mt. Pleasant Avenue (New Jersey Route 10), on the left when traveling north on Whippany Road.)
Marker installed: 1976
Circa - 1710.
The first submarine ride in the United States took place in New Jersey in 1898. The Holland VI, a prototype submarine designed by John Philip Holland, was tested in Passaic River.