Columbia subject headings:
Schwitters, Kurt, 1887-1948--Archives--Catalogs.
Schwitters, Kurt, 1887-1948--Bibliography--Catalogs.
Schwitters-Archiv Hannover--Catalogs.
Harvard subject headings:
Schwitters, Kurt, 1887-1948--Archives--Catalogs.
Schwitters, Kurt, 1887-1948--Bibliography--Catalogs.
Schwitters-Archiv Hannover--Catalogs.
Princeton subject headings:
Schwitters, Kurt, 1887-1948--Archives--Catalogs.
Schwitters, Kurt, 1887-1948--Bibliography--Catalogs.
Schwitters-Archiv Hannover--Catalogs.