Columbia subject headings:
Charles V, Holy Roman Emperor, 1500-1558--Correspondence.
Germany--History--Charles V, 1519-1556--Sources.
Holy Roman Empire--History--Charles V, 1519-1556--Sources.
Harvard subject headings:
Charles V, Holy Roman Emperor, 1500-1558.
Germany--History--Charles V, 1519-1556--Sources.
Holy Roman Empire--History--Charles V, 1519-1556--Sources.
Princeton subject headings:
Charles V, Holy Roman Emperor, 1500-1558.
Germany--History--Charles V, 1519-1556--Sources.
Holy Roman Empire--History--Charles V, 1519-1556--Sources.