These are the remains of the earliest iron smelting furnace in America, constructed in 1644 and in operation by spring, 1645.
Under the direction of John Winthrop, Jr. - future governor of Connecticut and a participant in the early years of . . . — — Map (db m298953) HM
"The Company of Undertakers for the Iron Works," consisting of English gentlemen and colonists, erected a furnace on this site in 1643. Joseph Jenks, their employe, built a forge here in 1647, invented the modern type of scythe, and built Boston's . . . — — Map (db m282033) HM