21Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 18 August 1816 (Jefferson Papers)
political economy; works on [index entry]
22John Wayles Eppes to Thomas Jefferson, 8 January 1819 (Jefferson Papers)
political economy; works on [index entry]
23Albert Gallatin to Thomas Jefferson, 7 June 1816 (Jefferson Papers)
political economy; works on [index entry]
24Thomas Jefferson to Joseph Milligan, 18 May 1816 (Jefferson Papers)
political economy; works on [index entry]
25Thomas Jefferson to John Adams, 11 January 1817 (Jefferson Papers)
political economy; works on [index entry]
26Thomas Jefferson to John Barnes, 12 October 1816 (Jefferson Papers)
political economy; works on [index entry]
27Thomas Jefferson to Joseph Milligan, [ca. 25 October 1818] (Jefferson Papers)
political economy; works on [index entry]
28Thomas Jefferson to John Barnes, 31 December 1816 (Jefferson Papers)
political economy; works on [index entry]
29Thomas Jefferson to Daniel Raymond, 15 January 1821 (Jefferson Papers)
political economy; works on [index entry]
30Thomas Jefferson to Joseph Milligan, 23 September 1817 (Jefferson Papers)
political economy; works on [index entry]