Columbia subject headings:
Harvard subject headings:
Castles--Germany--Alps, Bavarian--History.
Germany--History--20th century.
Germany--History--21st century.
Müller, Johannes, 1864-1949
Schloss Elmau--History.
Princeton subject headings:
Castles--Germany--Alps, Bavarian--History.
Germany--History--20th century.
Germany--History--21st century.
Müller, Johannes, 1864-1949.
Schloss Elmau--History.