Columbia subject headings:
Forge shops--France--Franche-Comté--History.
Metallurgy--France--Franche-Comté--History.
Viellard-Migeon et Cie.
Harvard subject headings:
Forge shops--France--Franche-Comté--History.
Forging industry--France--Franche-Comté--History.
International business enterprises--France--Franche-Comté--History.
Metal trade--France--Franche-Comté--History.
Viellard-Migeon et Cie--History.
Princeton subject headings: