[6] The gate of the "Conférence" was built at the time the great improvements were begun, in 1633. It was built after the grand plans of Cardinal de Richelieu and according to his own instructions (Gamboust).
[7] Piganiol de la Force (1673-1753), Description of the City of Paris, etc.
[8] Estat de la France (Collection Danjou).
[9] Extraits des comptes et dépenses du roi pour l'année 1616 (Collection Danjou).
[10] Mémoires de Mathieu Molé.
[11] Letter written by Pontis.
[12] Richelieu et la monarchie absolue.
[13] Mémoires of Lenet.
[14] See his Mémoires.
[15] A few years before his death, which occurred in 1670.