Columbia subject headings:
Art, German--Germany--Cologne--20th century.
Art, German--Germany--Cologne--Exhibitions.
Artists--Germany--Bibliography.
Avant-garde (Aesthetics)--Germany--Cologne--Exhibitions.
Cologne (Germany)--Intellectual life--Exhibitions.
Ernst, Max, 1891-1976--Exhibitions.
Harvard subject headings:
Art, German--Germany--Cologne--20th century--Exhibitions.
Art, German--Germany--Cologne--Exhibitions.
Art, Modern--20th century--Germany--Cologne--Exhibitions.
Artists--Germany--Bibliography.
Avant-garde (Aesthetics)--Germany--Cologne--Exhibitions.
Cologne (Germany)--Intellectual life--Exhibitions.
Ernst, Max, 1891-1976--Exhibitions.
Princeton subject headings:
Art, German--Germany (West)--Cologne--Exhibitions.
Art, Modern--20th century--Germany (West)--Cologne.
Artists--Germany (West)--Bibliography.
Avant-garde (Aesthetics)--Germany (West)--Cologne--Exhibitions.
Cologne (Germany)--Intellectual life--Exhibitions.
Ernst, Max, 1891-1976--Exhibitions.