1Thomas Appleton to Thomas Jefferson, 26 August 1815 (Jefferson Papers)
Ferdinand III, Duke of Tuscany [index entry]
2Philip Mazzei to Thomas Jefferson, [22] October 1815 (Jefferson Papers)
Ferdinand III, Duke of Tuscany [index entry]
3Thomas Appleton to Thomas Jefferson, 15 April 1816 (Jefferson Papers)
Ferdinand III, Duke of Tuscany [index entry]
4Enclosure: Will of Philip Mazzei, 3 December 1814 (Jefferson Papers)
Ferdinand III, Duke of Tuscany [index entry]