1José Corrêa da Serra to Thomas Jefferson, 6 September 1813 (Jefferson Papers)
Memorie Idraulico-Storiche sopra la Val-di-Chiana (V. Fossombroni) [index entry]
2Thomas Jefferson to José Corrêa da Serra, 19 April 1814 (Jefferson Papers)
Memorie Idraulico-Storiche sopra la Val-di-Chiana (V. Fossombroni) [index entry]