Columbia subject headings:
Harvard subject headings:
Baden-Württemberg (Germany)--History--19th century.
Hohenzollern (Germany)--History--19th century.
Hohenzollern, House of.
Prussia (Germany)--History--19th century.
Sigmaringen (Germany)--History--19th century.
Princeton subject headings:
Baden-Württemberg (Germany)--History--19th century.
Hohenzollern (Germany)--History--19th century.
Hohenzollern, House of.
Prussia (Germany)--History--19th century.
Sigmaringen (Germany)--History--19th century.