Columbia subject headings:
Bulteau, Augustine, 1860-1922.
Catholic historians--Correspondence.
Duchesne, L. (Louis), 1843-1922--Correspondence.
Harvard subject headings:
Bulteau, Augustine, 1860-1922--Correspondence.
Catholic Church--France--Clergy--Correspondence.
Catholic historians--France--Correspondence.
Duchesne, L. (Louis), 1843-1922--Correspondence.
Princeton subject headings: