11Thomas Jefferson to Joseph Milligan, 18 February 1818 (Jefferson Papers)
political economy; works on [index entry]
12Thomas Jefferson to Joseph Milligan, 13 March 1818 (Jefferson Papers)
political economy; works on [index entry]
13Thomas Jefferson to Joseph Milligan, 25 October 1818 (Jefferson Papers)
political economy; works on [index entry]
14Thomas Jefferson to Joseph Milligan, [ca. 25 October 1818] (Jefferson Papers)
political economy; works on [index entry]
15Thomas Jefferson to Joseph Milligan, 29 November 1818 (Jefferson Papers)
political economy; works on [index entry]
16Thomas Jefferson to Joseph Milligan, 9 December 1818 (Jefferson Papers)
political economy; works on [index entry]
17Thomas Jefferson to Joseph Milligan, 12 January 1819 (Jefferson Papers)
political economy; works on [index entry]
18Thomas Jefferson to Joseph Milligan, 9 April 1819 (Jefferson Papers)
political economy; works on [index entry]
19Thomas Jefferson to Joseph Milligan, 13 April 1819 (Jefferson Papers)
political economy; works on [index entry]