1Peter S. Du Ponceau to Thomas Jefferson, 14 November 1815 (Jefferson Papers)
It is a duty no less pleasing than honorable to me, to address you on behalf of the Historical &...
2Peter S. Du Ponceau to Thomas Jefferson, 8 February 1816 (Jefferson Papers)
The letter which you did me the honor to write to me on the 22 d ult o was duly laid before the...
3Peter S. Du Ponceau to Thomas Jefferson, 17 February 1817 (Jefferson Papers)
I have received the letter which you have done me the honor to write to me on the 26 th ult o ....