Columbia subject headings:
Harvard subject headings:
Ballerini, Paolo Angelo, 1814-1897--Correspondence.
Ballerini, Paolo Angelo, monsignore, 1814-1897--Correspondence.
Bishops--Italy--Milan--Biography.
Catholic Church--Italy--Bishops--Correspondence.
Princeton subject headings:
Ballerini, Paolo Angelo, 1814-1897--Correspondence.
Bishops--Italy--Milan--Correspondence.
Catholic Church--Bishops--Correspondence.
Catholic Church--Italy--Clergy--Correspondence.
Milan (Italy)--Church history--Sources.