Columbia subject headings:
Beckmann, Max, 1884-1950.
Dix, Otto, 1891-1969.
Harvard subject headings:
Art, German--20th century.
Beckmann, Max, 1884-1950--Criticism and interpretation.
Dix, Otto, 1891-1969--Criticism and interpretation.
Neue Sachlichkeit (Art)--Germany
Painters--Germany.
Princeton subject headings:
Beckmann, Max, 1884-1950.
Dix, Otto, 1891-1969.