Columbia subject headings:
Harvard subject headings:
Art, German--History--20th century.
Artists--Germany--Hamburg--History--20th century.
Avant-garde (Aesthetics)--Germany--Hamburg--History--20th century.
Hamburg (Germany)--Intellectual life--History--20th century.
Politics and culture--Germany--Hamburg--History--20th century.
Princeton subject headings:
Art, German--History--20th century.
Artists--Germany--Hamburg--History--20th century.
Avant-garde (Aesthetics)--Germany--Hamburg--History--20th century.
Hamburg (Germany)--Intellectual life--History--20th century.
Politics and culture--Germany--Hamburg--History--20th century.