Columbia subject headings:
Architecture--Germany--History--19th century--Catalogs.
Architecture--Germany--History--20th century--Catalogs.
Industrialists--Homes and haunts--Germany.
Mansions--Germany--Catalogs.
Harvard subject headings:
Architecture and society--Germany.
Architecture, Domestic--Germany
Architecture, Modern--19th century--Germany.
Architecture, Modern--20th century--Germany.
Housing development--Germany--History--19th century.
Housing development--Germany--History--20th century.
Middle class--Dwellings--Germany.
Vernacular architecture--Germany.
Princeton subject headings:
Architecture, Modern--19th century--Germany--Catalogs.
Architecture, Modern--20th century--Germany--Catalogs.
Industrialists--Homes and haunts--Germany.
Mansions--Germany--Catalogs.