1Thomas Jefferson to Joel Yancey, 13 September 1816 (Jefferson Papers)
Gibson, Patrick; and TJ’s flour [index entry]
2Thomas Jefferson to Joel Yancey, 14 March 1818 (Jefferson Papers)
Gibson, Patrick; and TJ’s flour [index entry]
3Thomas Jefferson to Joel Yancey, 27 November 1819 (Jefferson Papers)
Gibson, Patrick; and TJ’s flour [index entry]