Columbia subject headings:
Friedrichstadt (Schleswig-Holstein, Germany)--Ethnic relations.
Friedrichstadt (Schleswig-Holstein, Germany)--History.
Jews--Germany--Friedrichstadt (Schleswig-Holstein)--History--19th century.
Harvard subject headings:
Friedrichstadt (Schleswig-Holstein, Germany)--Ethnic relations.
Jews--Germany--Friedrichstadt (Schleswig-Holstein, Germany)--History.
Princeton subject headings: