1Thomas 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...
2Thomas 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...
3Thomas 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...
4Thomas Jefferson to Peter S. Du Ponceau, 30 December 1817 (Jefferson Papers)
An absence of 6. weeks has occasioned your letters of the 5 th & 11 th inst to lie thus long...
5Thomas Jefferson to Peter S. Du Ponceau, 17 January 1818 (Jefferson Papers)
Your favors of the 5 th & 6 th are recieved, and I am sorry it is not in my power to interest any...
6Thomas Jefferson to Peter S. Du Ponceau, 19 February 1818 (Jefferson Papers)
your favor of Jan. 24. was duly recieved, and I now inclose you the supplements for the three...