Columbia subject headings:
Iron founding--Europe.
Iron industry and trade--Europe.
Harvard subject headings:
Decorative cast-ironwork--Europe, Central--History--19th century--Exhibitions.
Decorative cast-ironwork--Germany--History--19th century--Exhibitions.
Ironwork--Europe, Central--History--19th century--Exhibitions.
Princeton subject headings:
Decorative cast-ironwork--Europe, Central--Exhibitions.
Decorative cast-ironwork--Germany--Exhibitions.