Columbia subject headings:
Harvard subject headings:
Art, German--19th century--Exhibitions.
Art, German--20th century--Exhibitions.
Kollwitz, Käthe, 1867-1945--Exhibitions.
Kollwitz, Käthe, 1867-1945--Friends and associates--Exhibitions.
Princeton subject headings:
Art, German--19th century--Exhibitions.
Art, German--20th century--Exhibitions.
Kollwitz, Käthe, 1867-1945--Exhibitions.
Kollwitz, Käthe, 1867-1945--Friends and associates--Exhibitions.