Columbia subject headings:
Constructivism (Art)--Exhibitions.
Dadaism--Exhibitions.
Schwitters, Ernst--Art collections--Catalogs.
Harvard subject headings:
Art, Modern--20th century--Exhibitions
Dadaism--Exhibitions
Schwitters, Ernst--Art collections--Exhibitions.
Schwitters, Kurt, 1887-1948--Exhibitions.
Princeton subject headings: