Columbia subject headings:
Art and literature.
German literature--21st century.
Masks in art.
Masks in literature.
Nussbaum, Felix, 1904-1944--Literary collections.
Harvard subject headings:
Art and literature--Germany--History--20th century.
German literature--21st century.
Masks in art.
Masks in literature.
Nussbaum, Felix, 1904-1944--Appreciation.
Nussbaum, Felix, 1904-1944--Literary collections.
Portrait painting, German--20th century.
Portraits in literature.
Princeton subject headings: