1Thomas Jefferson’s Account with Nicolas G. Dufief, [ca. 4 May 1815] (Jefferson Papers)
books; on mathematics [index entry]
2Nicolas G. Dufief to Thomas Jefferson, 5 August 1815 (Jefferson Papers)
books; on mathematics [index entry]
3Nicolas G. Dufief to Thomas Jefferson, 25 August 1815 (Jefferson Papers)
books; on mathematics [index entry]
4Enclosure: Thomas Jefferson’s Account with Nicolas G. Dufief, [ca. 25 August 1815] (Jefferson Papers)
books; on mathematics [index entry]