Columbia subject headings:
Schwitters, Kurt, 1887-1948--Exhibitions.
Harvard subject headings:
Schwitters, Kurt, 1887-1948--Exhibitions.
Schwitters, Kurt, 1887-1948. Merzbau--Exhibitions.
Princeton subject headings:
Schwitters, Kurt, 1887-1948--Exhibitions.
Schwitters, Kurt, 1887-1948. Aller Anfang ist Merz. English--Exhibitions.