Columbia subject headings:
Harvard subject headings:
Germany. Geheime Staatspolizei--History.
Holocaust, Jewish (1939-1945)--Germany--Trier.
Intelligence service--Germany--Trier--History--20th century.
Jews--Germany--Trier--History--20th century.
Police--Germany--Trier--History--20th century.
Princeton subject headings:
Germany. Geheime Staatspolizei
National socialism--Germany--Trier--History.