Columbia subject headings:
Authors, Exiled--United States.
Authors, German--20th century--Political and social views.
Expatriate artists--United States.
Literature and state--Germany--History--20th century.
Literature and state--United States--History--20th century.
Politics and literature--Germany--History--20th century.
Politics and literature--United States--History--20th century.
United States. Federal Bureau of Investigation.
Harvard subject headings:
Authors, Exiled--United States.
Authors, German--20th century--Political and social views
Expatriate artists--United States.
Literature and state--Germany--History--20th century.
Literature and state--United States--History--20th century.
Politics and literature--Germany--History--20th century.
Politics and literature--United States--History--20th century.
United States. Federal Bureau of Investigation
Princeton subject headings:
Authors, Exiled--United States.
Authors, German--20th century--Political and social views.
Expatriate artists--United States.
Literature and state--Germany--History--20th century.
Literature and state--United States--History--20th century.
Politics and literature--Germany--History--20th century.
Politics and literature--United States--History--20th century.
United States. Federal Bureau of Investigation