Columbia subject headings:
Charles, d'Odet, 1776-1846--Correspondence.
Eugénie, de Treytorrens, 1785-1856--Correspondence.
France--Intellectual life--19th century--Biography.
Switzerland--Intellectual life--19th century--Biography.
Harvard subject headings:
Charles, d'Odet, 1776-1846--Correspondence.
Eugénie, de Treytorrens, 1785-1856--Correspondence.
France--Intellectual life--19th century--Biography.
Switzerland--Intellectual life--19th century--Biography.
Princeton subject headings:
Valais (Switzerland)--History--19th Century--Sources.
Vaud (Switzerland)--History--19th Century--Sources.