Columbia subject headings:
Emigration and immigration--History--20th century.
Exiles--History--20th century.
Harvard subject headings:
Emigration and immigration in literature--Congresses.
Escape in literature--Congresses.
Exiles in literature--Congresses
Literature, Modern--20th century--History and criticism--Congresses
Literature, Modern--21st century--History and criticism--Congresses.
Princeton subject headings:
Exiles in literature.
German literature--History and criticism.
Refugees in literature.