Columbia subject headings:
Harvard subject headings:
Aesthetics--History--Congresses.
Arts, European--History--Congresses.
Arts, German--Themes, motives--Congresses.
Color in art--Congresses.
Color in literature--Congresses.
Symbolism of colors--History--Congresses.
Princeton subject headings:
Art, German--Themes, motives--Congresses.
Color in art--Congresses.
Color in literature--Congresses.
German literature--Themes, motives--Congresses.
Symbolism of colors--Congresses.