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 &...
2Thomas Jefferson to Peter S. Du Ponceau, 22 January 1816 (Jefferson Papers)
I have been 4. of the last 5. months absent from home, which must apologise for this very tardy...
3Peter 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...
4Thomas Jefferson to Peter S. Du Ponceau, 26 January 1817 (Jefferson Papers)
I promised you in my letter of Jan. 22. 16. to make enquiry on the subject of the MS. journal of...
5Peter 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 ....
6Thomas Jefferson to Peter S. Du Ponceau, 6 November 1817 (Jefferson Papers)
The long delay of the MS. of Col o Byrd which you were so kind as to send me , needs apology. on...
7Thomas Jefferson to Peter S. Du Ponceau, 7 November 1817 (Jefferson Papers)
A part of the information of which the expedition of Lewis and Clarke was the object has been...
8Thomas Jefferson to Peter S. Du Ponceau, 7 November 1817 (Jefferson Papers)
Th: Jefferson presents his compliments to M r Duponceau , & his thanks for his pamphlet on...
9Peter S. Du Ponceau to Thomas Jefferson, 5 December 1817 (Jefferson Papers)
The two letters which you have done me the honor to write to me, dated the 6 th & 7 th ultimo ,...
10Peter S. Du Ponceau to Thomas Jefferson, 11 December 1817 (Jefferson Papers)
In the last letter which I had the honor of writing to you, I omitted to return you thanks in the...