Columbia subject headings:
Archivio vaticano.
Catholic Church--Historiography.
Church history--Historiography.
Freedom of information in the church.
Papacy--History.
Harvard subject headings:
Archivio vaticano
Catholic Church--Historiography.
Church history--Historiography.
Freedom of information in the church.
Papacy--History
Princeton subject headings:
Archivio vaticano.
Catholic Church--Historiography.
Church history--Historiography.
Freedom of information in the church.
Papacy--History.