Columbia subject headings:
De Luca, Giuseppe, 1898-1962--Correspondence.
Paul VI, Pope, 1897-1978--Correspondence.
Harvard subject headings:
De Luca, Giuseppe, 1898-1962--Correspondence.
Paul VI, Pope, 1897-1978--Correspondence.
Princeton subject headings:
Catholic Church--Italy--Clergy--Correspondence.
De Luca, Giuseppe, 1898-1962--Correspondence.
Paul VI, Pope, 1897-1968--Correspondence.