Columbia subject headings:
Harvard subject headings:
Commercial catalogs--History--Exhibitions.
Princeton subject headings:
Commercial catalogs--Exhibitions.
Hardware--Germany (West)--Rhineland--Exhibitions.
Hardware--Germany (West)--Westphalia--Exhibitions.
House furnishings industry and trade--Germany (West)--Rhineland--Exhibitions.
House furnishings industry and trade--Germany (West)--Westphalia--Exhibitions.