Columbia subject headings:
Frankfurter Römer (Frankfurt am Main, Germany)--Catalogs.
Holy Roman Empire--Kings and rulers--Portraits--Catalogs.
Kaisersaal (Frankfurter Römer, Frankfurt am Main, Germany)--Catalogs.
Portrait painting, German--19th century--Catalogs.
Portrait painting--Germany--Frankfurt am Main--Catalogs.
Harvard subject headings:
Frankfurter Römer (Frankfurt am Main, Germany)--Catalogs.
Holy Roman Empire--Kings and rulers--Portraits--Catalogs.
Kaisersaal (Frankfurter Römer, Frankfurt am Main, Germany)--Catalogs.
Portrait painting, German--19th century--Catalogs.
Portrait painting--Germany--Frankfurt am Main--Catalogs.
Princeton subject headings:
Catalogs.
Frankfurter Römer (Frankfurt am Main, Germany)--Catalogs.
Holy Roman Empire--Kings and rulers--Portraits--Catalogs.
Kaisersaal (Frankfurter Römer, Frankfurt am Main, Germany)--Catalogs.
Portrait painting, German--19th century--Catalogs.
Portrait painting--Germany--Frankfurt am Main--Catalogs.
Portraits.