1Joseph C. Cabell to Thomas Jefferson, 29 November 1813 (Jefferson Papers)
political economy; study of [index entry]
2Thomas Cooper to Thomas Jefferson, 15 September 1814 (Jefferson Papers)
political economy; study of [index entry]
3Thomas Cooper to Thomas Jefferson, 22 September 1814 (Jefferson Papers)
political economy; study of [index entry]
4Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 18 August 1816 (Jefferson Papers)
political economy; study of [index entry]
5Thomas Cooper to Thomas Jefferson, 19 September 1817 (Jefferson Papers)
political economy; study of [index entry]
6Destutt de Tracy to Thomas Jefferson, 11 April 1818 (Jefferson Papers)
political economy; study of [index entry]
7William E. Richmond to Thomas Jefferson, 10 December 1819 (Jefferson Papers)
political economy; study of [index entry]