1Thomas Jefferson to Alexander Hepburn, 7 August 1819 (Jefferson Papers)
canals; at Poplar Forest [index entry]
2Joel Yancey to Thomas Jefferson, 26 October 1819 (Jefferson Papers)
canals; at Poplar Forest [index entry]
3Thomas Jefferson to Joel Yancey, 30 October 1819 (SJL description) (Jefferson Papers)
canals; at Poplar Forest [index entry]
4Joel Yancey to Thomas Jefferson, 12 December 1819 (Jefferson Papers)
canals; at Poplar Forest [index entry]
5Joel Yancey to Thomas Jefferson, 27 February 1820 (Jefferson Papers)
canals; at Poplar Forest [index entry]
6Thomas Jefferson to Joel Yancey, 16 March 1820 (Jefferson Papers)
canals; at Poplar Forest [index entry]
7Joel Yancey to Thomas Jefferson, 28 March 1820 (Jefferson Papers)
canals; at Poplar Forest [index entry]