Stephen Vail, owner of Speedwell Iron Works, built machinery for S.S. Savannah, first trans-Atlantic steamship, in 1819. His son, Alfred Vail, and Samuel Morse first publicly demonstrated electromagnetic telegraph in 1838.National Register of Historic Places

New Jersey Register of Historic Places

Morris County Heritage Commission

Marker is on Speedwell Avenue (U.S. 202) 0.2 miles north of Cory Road, on the right when traveling north.

Courtesy hmdb.org

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