Columbia subject headings:
Art, Modern--20th century--Exhibitions.
Art--Private collections--Germany--Exhibitions.
Cremer, Siegfried--Art collections--Exhibitions.
Harvard subject headings:
Art, Modern--20th century--Exhibitions
Art--Private collections--Germany--Exhibitions
Cremer, Siegfried, 1929-2015--Art collections--Exhibitions.
Princeton subject headings:
Art, Modern--20th century--Exhibitions.
Art--Private collections--Germany--Exhibitions.
Cremer, Siegfried, 1929-2015--Art collections--Exhibitions.