Penn State Special Collections Library:
Stackpole Carbon Company: Metal finishing department (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Chemical department (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Machine shop (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Jumbo room (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Mill room (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Grinding plates (1929)
Penn State Special Collections Library:
Stackpole Carbon Company (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Electric lab (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Metal plate molding (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Chemical lab (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Graphitizing department (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Plate testing, stock room (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Chemical lab (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Electric lab (1929)
Penn State Special Collections Library:
Stackpole Carbon Company: Coffer pounding department (1929)