On Philadelphia Pike (Business U.S. 13), on the right when traveling north.
John Grubb, one of the original English settlers in Delaware, acquired a one-third interest in a 600 acre tract of land at this location in 1680. Several generations passed and the Grubb family greatly increased their land holdings in the area . . . — — Map (db m146375) HM
On Granite Street at Gold Street on Granite Street.
Peter Grubb (c. 1700-54) carried on his initial efforts at iron-making in 1735 just slightly to the north. He used the Catalan-type forge which had originated in Spain sometime during the tenth century. — — Map (db m30274) HM
On West 28th Division Highway (U.S. 322) 0.1 miles east of Speedwell Forge Road.
Built c. 1740 by Peter Grubb, pioneer ironmaster at nearby Cornwall Furnace, and named for the Upper and Lower Hopewell Forges located on Hammer Creek near the house. Remnants of the forge dams may still be seen in the creek. — — Map (db m30272) HM
Charcoal iron furnace built by Peter Grubb, operated 1742-1883. Best surviving example of early Pennsylvania ironworks. Now a State historical shrine, gift of Mrs. Margaret Coleman Buckingham, heir of its famous owner, Robert Coleman. — — Map (db m30277) HM
Built in 1742 by Peter Grubb near an immensely rich ore deposit and acres of forest for making charcoal fuel. a self-sufficient community included the ironmaster's mansion and workers' houses. The furnace produced pig iron and cast goods, and . . . — — Map (db m30279) HM
