Penn State Special Collections Library:
Blair County (Pa.): Allegheny furnace
Penn State Special Collections Library:
Blair County (Pa.): Bald Eagle furnace
Penn State Special Collections Library:
Huntingdon County (Pa.): Barree furnace
Penn State Special Collections Library:
Huntingdon County (Pa.): Barree iron works
Penn State Special Collections Library:
Cumberland County (Pa.): Big Pond furnace
Penn State Special Collections Library:
Cumberland County (Pa.): Boiling Springs furnace
Penn State Special Collections Library:
Cumberland County (Pa.): Boiling Springs furnace
Penn State Special Collections Library:
Indiana County (Pa.): Buena Vista furnace
Penn State Special Collections Library:
Franklin County (Pa.): Caledonia furnace
Penn State Special Collections Library:
Blair County (Pa.): Canoe furnace
Penn State Special Collections Library:
Franklin County (Pa.): Carrick furnace
Penn State Special Collections Library:
Centre County (Pa.): Centre furnace
Penn State Special Collections Library:
Huntingdon County (Pa.): Chester furnace
Penn State Special Collections Library:
Adams County (Pa.): Chester Grove furnace
Penn State Special Collections Library:
Clearfield County (Pa.): Clearfield furnace
Penn State Special Collections Library:
Lancaster County (Pa.): Cordelia furnace
Penn State Special Collections Library:
Centre County (Pa.): Eagle furnace
Penn State Special Collections Library:
Huntingdon County (Pa.): Edward furnace
Penn State Special Collections Library:
Dauphin County (Pa.): Emeline furnace
Penn State Special Collections Library:
Blair County (Pa.): Etna furnace
Penn State Special Collections Library:
Clinton County (Pa.): Farrandsville furnace
Penn State Special Collections Library:
Franklin County (Pa.): Franklin furnace
Penn State Special Collections Library:
Huntingdon County (Pa.): Greenwood furnace
Penn State Special Collections Library:
Centre County (Pa.): Hannah furnace
Penn State Special Collections Library:
Mifflin County (Pa.): Hope furnace
Penn State Special Collections Library:
Mifflin County (Pa.): Hope furnace
Penn State Special Collections Library:
Bedford County (Pa.): Hopewell furnace
Penn State Special Collections Library:
Berks County (Pa.): Hopewell furnace
Penn State Special Collections Library:
Huntingdon County (Pa.): Huntingdon furnace
Penn State Special Collections Library:
Huntingdon County (Pa.): Huntingdon furnace
