Columbia subject headings:
Harvard subject headings:
Bosco, Giovanni, Saint, 1815-1888--Correspondence.
Christian saints--Italy--Turin--History--19th century--Sources.
Church and education--Italy--Turin--History--19th century--Sources.
Church and social problems--Italy--Turin--History--19th century--Sources.
Turin (Italy)--Social conditions--19th century--Sources.
Princeton subject headings:
Bosco, Giovanni, Saint, 1815-1888--Correspondence.
Christian saints--Correspondence.