1John Adams to Thomas Jefferson, with postscript by Abigail Adams, 20 June 1815 (Jefferson Papers)
2Thomas Jefferson to John Adams, 10 August 1815 (Jefferson Papers)
3Salma Hale’s Notes on his Visit to Monticello, [after 1818] (Jefferson Papers)
4Salma Hale to Thomas Jefferson, 13 July 1818 (Jefferson Papers)
5Thomas Jefferson to Salma Hale, 26 July 1818 (Jefferson Papers)