1Thomas Jefferson’s Promissory Note to Thomas Jefferson Randolph, 21 August 1818 (Jefferson Papers)
2Patrick Gibson to Thomas Jefferson, 18 February 1819 (Jefferson Papers)
3Patrick Gibson to Thomas Jefferson, 12 May 1819 (second letter) (Jefferson Papers)
4John G. Robert (for Patrick Gibson) to Thomas Jefferson, 16 August 1819 (Jefferson Papers)
5Patrick Gibson to Thomas Jefferson, 27 August 1819 (Jefferson Papers)