Columbia subject headings:
Art, Modern--20th century--Exhibitions.
Art--Private collections--Germany--Wuppertal--Exhibitions.
Rosenbranz, Dieter--Art collections--Exhibitions.
Harvard subject headings:
Art, Modern--20th century--Exhibitions
Art--Private collections--Exhibitions
Rosenkranz, Dieter--Exhibitions.
Rosenkranz, Si--Exhibitions.
Princeton subject headings:
Art, Modern--20th century--Exhibitions.
Art--Private collections--Germany--Wuppertal--Exhibitions.
Rosenkranz, Dieter--Art Collections--Exhibitions.