Columbia subject headings:
Art, German--20th century--Congresses.
Brücke (Artists' group)--Congresses.
Expressionism (Art)--Germany--Congresses.
Harvard subject headings:
Art, German--20th century--Congresses.
Art--Collectors and collecting--Germany--History--20th century.
Brücke (Artists' group)--Congresses.
Expressionism (Art)--Germany--Congresses.
Gerlinger, Hermann--Art collections--Congresses.
Princeton subject headings:
Art, German--20th century--Congresses.
Brücke (Artists' group)--Congresses.
Expressionism (Art)--Germany--Congresses.