1Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 12 May 1816 (Jefferson Papers)
Lancaster, Joseph; educational system of [index entry]
2John Preston to Thomas Jefferson, 18 August 1816 (Jefferson Papers)
Lancaster, Joseph; educational system of [index entry]
3Nicolas G. Dufief to Thomas Jefferson, 22 October 1816 (Jefferson Papers)
Lancaster, Joseph; educational system of [index entry]
4Isaac Cox Barnet to Thomas Jefferson, 23 September 1817 (Jefferson Papers)
Lancaster, Joseph; educational system of [index entry]
5Josephus B. Stuart to Thomas Jefferson, 27 January 1818 (Jefferson Papers)
Lancaster, Joseph; educational system of [index entry]
6Fernagus De Gelone to Thomas Jefferson, 14 June 1820 (Jefferson Papers)
Lancaster, Joseph; educational system of [index entry]
7Fernagus De Gelone to Thomas Jefferson, 29 June 1820 (Jefferson Papers)
Lancaster, Joseph; educational system of [index entry]
8Fernagus De Gelone to Thomas Jefferson, 5 October 1820 (Jefferson Papers)
Lancaster, Joseph; educational system of [index entry]
9Fernagus De Gelone to Thomas Jefferson, 3 August 1821 (Jefferson Papers)
Lancaster, Joseph; educational system of [index entry]
10Fernagus De Gelone to Thomas Jefferson, 10 January 1822 (Jefferson Papers)
Lancaster, Joseph; educational system of [index entry]