Columbia subject headings:
Art--Private collections--Germany--Berlin--Exhibitions.
Dix, Otto, 1891-1969--Exhibitions.
Karsch, Florian--Art collections--Exhibitions.
Karsch, Inge--Art collections--Exhibitions.
Nierendorf, Karl--Art collections--Exhibitions.
Harvard subject headings:
Princeton subject headings:
Berlinische Galerie--Exhibitions.
Dix, Otto, 1891-1969--Exhibitions.
Prints--Germany--Berlin--Exhibitions.