Columbia subject headings:
Harvard subject headings:
Arts--Germany--Hannover--History--20th century.
Avant-garde (Aesthetics)--Germany--Hannover--History--20th century.
Hannover (Germany)--Intellectual life--20th century.
Schwitters, Kurt, 1887-1948
Spengemann, Christof, 1877-1952
Princeton subject headings:
Arts, German--Germany--Hannover--20th century.
Arts--Germany--Hannover--History--20th century.
Grotesque in art.
Schwitters, Kurt, 1887-1948.
Spengemann, Christof, 1877-1952.