1To Thomas Jefferson from Pierre Derbigny, 7 February 1805 (Jefferson Papers)
I have the honour to inclose herewith the notes on Wachitaw , & must beg to be excused for...
2To Thomas Jefferson from Pierre Derbigny, 14 November 1808 (Jefferson Papers)
As an inhabitant of a country which had received from you a signalized protection in an...
3From Thomas Jefferson to Pierre Derbigny, 24 December 1808 (Jefferson Papers)
Th: Jefferson returns thanks to mr Derbigny for the copy of his Refutation of M. Duponceau which...