Columbia subject headings:
Ammannati Piccolomini, Jacopo, 1422-1479--Correspondence.
Harvard subject headings:
Ammannati Piccolomini, Jacopo, 1422-1479--Correspondence.
Princeton subject headings:
Ammannati Piccolomini, Jacopo, 1422-1479--Correspondence.
Catholic Church--Bishops--Correspondence.
Catholic Church--Italy--Clergy--Correspondence.
Catholic Church--Italy--History--To 1500--Sources.
Humanism--Italy--History--To 1500--Sources.
Humanists--Italy--Correspondence.
Italy--Church history--15th century--Sources.