Columbia subject headings:
German literature--20th century--History and criticism.
German literature--Foreign countries.
PEN (Organization)
Harvard subject headings:
Authors, Exiled--Correspondence--Exhibitions.
Authors, German--Correspondence--Exhibitions.
Exiles' writings, German--Exhibitions.
German literature--20th century--History and criticism
German literature--20th century--History and criticism--Exhibitions.
German literature--Foreign countries
German literature--Foreign countries--Exhibitions.
PEN (Organization)--Exhibitions.
Princeton subject headings:
German literature--20th century--History and criticism.
German literature--Foreign countries.
P.E.N.