Columbia subject headings:
Harvard subject headings:
Catholic Church--History--19th century.
Rigler, Peter Paul, 1796-1873--Correspondence.
Rosmini, Antonio, 1797-1855--Correspondence.
Princeton subject headings:
Catholic Church--Italy--Clergy--Correspondence.
Rigler, Peter Paul, 1796-1873--Correspondence.
Rosmini, Antonio, 1797-1855--Correspondence.