Columbia subject headings:
Harvard subject headings:
Düsseldorfer Malerschule.
Portrait painting, German--Germany--Düsseldorf.
Portrait painting--19th century--Germany--Düsseldorf.
Princeton subject headings:
Düsseldorfer Malerschule.
Portrait painters--Germany--Düsseldorf.
Portrait painting, German.
Portrait painting--19th century--Germany--Düsseldorf.