Columbia subject headings:
Centre Charles Péguy--Manuscripts--Catalogs.
Péguy, Charles, 1873-1914--Manuscripts--Catalogs.
Harvard subject headings:
Centre Charles Péguy--Catalogs.
Manuscripts, French--France--Orléans--Catalogs.
Péguy, Charles, 1873-1914--Manuscripts--Catalogs.
Princeton subject headings: