Columbia subject headings:
Architecture, Domestic--Germany--Frankfurt am Main.
Architecture--Germany--Frankfurt am Main--History--19th century.
Harvard subject headings:
Architecture, Domestic--Germany--Frankfurt am Main.
Architecture, Modern--19th century--Germany--Frankfurt am Main.
Architecture--Germany--Frankfurt am Main--History--19th century.
Architecture--Germany--Frankfurt am Main--History.
Princeton subject headings:
Architecture, Domestic--Germany--Frankfurt am Main.
Architecture, Modern--19th century--Germany--Frankfurt am Main.