1Thomas Jefferson to John Graham, 5 January 1811 (Jefferson Papers)
2John Graham to Thomas Jefferson, 11 January 1811 (Jefferson Papers)
3John Graham to Thomas Jefferson, 15 January 1811 (Jefferson Papers)
4Thomas Jefferson to John Wayles Eppes, 24 January 1811 (Jefferson Papers)
5Thomas Jefferson to Francis W. Gilmer, 28 February 1816 (Jefferson Papers)