Columbia subject headings:
Péguy, Charles, 1873-1914--Religion.
Harvard subject headings:
Péguy, Charles, 1873-1914--Religion.
Princeton subject headings:
Baillet, Louis, 1875-1913--Correspondence.
Maritain, Jacques, 1882-1973--Correspondence.
Péguy, Charles, 1873-1914--Religion.