Columbia subject headings:
Harvard subject headings:
Art critics--Germany--Biography--Congresses.
Avant-garde (Aesthetics)--Europe--Congresses.
Modernism (Aesthetics)--Europe--Congresses.
Walden, Herwarth, 1878-1941--Congresses.
Princeton subject headings:
Art critics--Germany--Congresses.
Arts, European--20th century--Congresses.
Authors, German--20th century--Congresses.
Avant-garde (Aesthetics)--Europe--Congresses.
Expressionism (Art)--Europe--Congresses.
Modernism (Aesthetics)--Europe--Congresses.
Sturm--Congresses.
Walden, Herwarth, 1878-1941--Congresses.