Columbia subject headings:
Art, German--20th century--Exhibitions.
Blaue Reiter (Group of artists)--Exhibitions.
Harvard subject headings:
Art, German--Exhibitions.
Art, Modern--20th century--Germany--Exhibitions.
Blaue Reiter (Group of artists)--Exhibitions.
Princeton subject headings:
Art, German--20th century--Exhibitions.
Blaue Reiter (Group of artists)--Exhibitions.