1Pierre Samuel Du Pont de Nemours to Thomas Jefferson, 18 August 1816 (Jefferson Papers)
Notes on the State of Virginia (Thomas Jefferson); references to [index entry]
2Caleb Atwater to Thomas Jefferson, 2 June 1818 (Jefferson Papers)
Notes on the State of Virginia (Thomas Jefferson); references to [index entry]
3Samuel Wood to Thomas Jefferson, 3 March 1821 (Jefferson Papers)
Notes on the State of Virginia (Thomas Jefferson); references to [index entry]