Columbia subject headings:
Harvard subject headings:
Drawing, European--Exhibitions.
Drawing--20th century--Europe--Exhibitions.
Drawing--Private collections--Germany--Berlin--Exhibitions.
Watercolor painting, European--Exhibitions.
Watercolor painting--20th century--Europe--Exhibitions.
Watercolor painting--Private collections--Germany--Berlin--Exhibitions.
Princeton subject headings:
Drawing, European--Exhibitions.
Drawing--20th century--Exhibitions.
Drawing--Private collections--Germany--Berlin--Exhibitions.
Watercolor painting, European--Exhibitions.
Watercolor painting--20th century--Exhibitions.
Watercolor painting--Private collections--Germany--Berlin--Exhibitions.