Columbia subject headings:
Art, Belgian--19th century--Exhibitions.
Art, Belgian--20th century--Exhibitions.
Harvard subject headings:
Art, Belgian--20th century--Exhibitions.
Art--Private collections--Belgium--Exhibitions.
Painting, Belgian--20th century--Exhibitions.
Simon, Heinrich--Art collections--Exhibitions.
Princeton subject headings:
Art, Belgian--19th century--Exhibitions.
Art, Belgian--20th century--Exhibitions.