Columbia subject headings:
Museum Folkwang Essen.
Painting, Modern--19th century.
Painting, Modern--20th century.
Painting--Collectors and collecting--Germany--Essen.
Harvard subject headings:
Museum Folkwang Essen.
Painting, Modern--19th century
Painting, Modern--20th century
Painting--Collectors and collecting--Germany--Essen.
Princeton subject headings: