Columbia subject headings:
Prussians--Germany--Saarland.
Saarland (Germany)--Ethnic relations.
Saarland (Germany)--History--19th century.
Saarland (Germany)--History--20th century.
Harvard subject headings:
Prussia (Germany)--History--Congresses.
Saarland (Germany)--History--Congresses.
Princeton subject headings:
Prussians--Germany--Saarland.
Saarland (Germany)--Ethnic relations.
Saarland (Germany)--History--19th century.
Saarland (Germany)--History--20th century.