Columbia subject headings:
Abstract expressionism--Germany--Exhibitions.
Blaue Reiter (Group of artists)--Exhibitions.
Harvard subject headings:
Abstract expressionism--Exhibitions.
Art, Modern--20th century--Exhibitions
Blaue Reiter (Group of Artists)--Exhibitions.
Spirituality in art--Exhibitions.
Princeton subject headings:
Abstract expressionism--Germany--Exhibitions.
Blaue Reiter (Group of artists)--Exhibitions.