Columbia subject headings:
Diplomatics, Latin--Holy Roman Empire.
Holy Roman Empire--History--Henry VI, 1190-1197--Sources.
Harvard subject headings:
Diplomatics, Latin--Holy Roman Empire.
Holy Roman Empire--History--Henry VI, 1190-1197--Sources.
Princeton subject headings:
Diplomatics, Latin--Holy Roman Empire.
Holy Roman Empire--History--Henry VI, 1190-1197--Sources.