1Thomas Jefferson to Albert Gallatin, 26 December 1820 (Jefferson Papers)
Mississippi River; as geographical boundary [index entry]
2Thomas Jefferson to Jesse Wharton, 22 June 1820 (Jefferson Papers)
Mississippi River; as geographical boundary [index entry]
3James Wilkinson to Thomas Jefferson, 4 August 1818 (Jefferson Papers)
Mississippi River; as geographical boundary [index entry]
4Enclosure: Nicholas Biddle to William Tilghman, 6 April 1818 (Jefferson Papers)
Mississippi River; as geographical boundary [index entry]
5Peter S. Du Ponceau to Thomas Jefferson, 22 January 1818 (Jefferson Papers)
Mississippi River; as geographical boundary [index entry]
6James Monroe to Thomas Jefferson, 23 December 1817 (Jefferson Papers)
Mississippi River; as geographical boundary [index entry]
7John Wayles Eppes to Thomas Jefferson, 11 December 1817 (Jefferson Papers)
Mississippi River; as geographical boundary [index entry]
8Peter S. Du Ponceau to Thomas Jefferson, 5 December 1817 (Jefferson Papers)
Mississippi River; as geographical boundary [index entry]
9Thomas Jefferson to Wilson Cary Nicholas, 19 April 1816 (Jefferson Papers)
Mississippi River; as geographical boundary [index entry]
10Thomas Jefferson to David Bailie Warden, 29 December 1813 (Jefferson Papers)
Mississippi River; as geographical boundary [index entry]