1Thomas Jefferson to Isaac McPherson, 13 August 1813 (Jefferson Papers)
Encyclopédie (J. d’Alembert and D. Diderot) [index entry]
2Augustus B. Woodward to Thomas Jefferson, 16 August 1813 (Jefferson Papers)
Encyclopédie (J. d’Alembert and D. Diderot) [index entry]
3Thomas Jefferson to George Ticknor, 4 July 1815 (Jefferson Papers)
Encyclopédie (J. d’Alembert and D. Diderot) [index entry]
4John Adams to Thomas Jefferson, 2 March 1819 (Jefferson Papers)
Encyclopédie (J. d’Alembert and D. Diderot) [index entry]
5John Adams to Thomas Jefferson, 12 May 1820 (Jefferson Papers)
Encyclopédie (J. d’Alembert and D. Diderot) [index entry]