Cornwall Furnace
Built by Peter Grubb. Operated from 1742 to 1883. Administered by the Pennsylvania Historical and Museum Commission.
Digital Commonwealth, Boston Public LibraryDigital Commonwealth, Boston Public LibraryDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford LibrariesDavid Rumsey Map Collection, Stanford Libraries
Marker data: Pennsylvania Historical and Museum Commission via data.pa.gov
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