Columbia subject headings:
Eckstein, Ferdinand, baron d', 1790-1861--Correspondence.
France--Intellectual life--19th century.
Intellectuals--France--Correspondence.
Harvard subject headings:
Eckstein, Ferdinand, baron d', 1790-1861--Correspondence.
France--Intellectual life--19th century.
Intellectuals--France--Correspondence.
Princeton subject headings: