Columbia subject headings:
Alexander VI, Pope, 1431-1503.
Borgia family.
Innocent VIII, Pope, 1432-1492.
Papacy--History--1447-1565.
Papal States--History.
Harvard subject headings:
Burchard, Johann, -1506.
Princeton subject headings:
Alexander VI, Pope, 1431-1503.
Borgia family.
Innocent VIII, Pope, 1432-1492.
Papacy--History--1447-1565.
Papal States--History.