1Patrick Gibson to Thomas Jefferson, 27 February 1812 (Jefferson Papers)
Gibson, Patrick; and plows for TJ [index entry]
2Thomas Jefferson to Patrick Gibson, 1 March 1812 (Jefferson Papers)
Gibson, Patrick; and plows for TJ [index entry]
3Samuel P. Parsons to Thomas Jefferson, 16 March 1814 (Jefferson Papers)
Gibson, Patrick; and plows for TJ [index entry]