1From Thomas Jefferson to Julian Ursin Niemcewicz, 1 June 1798 (Jefferson Papers)
); faint; at foot of text: “Julien Niemcewicz”; endorsed by TJ in ink on verso. Addressed,...
2From Thomas Jefferson to Julian Ursin Niemcewicz, 14 June 1798 (Jefferson Papers)
); faint; at foot of text: “Mr. Niemcewicz”; endorsed by TJ in ink on verso.
3From Thomas Jefferson to Julian Ursin Niemcewicz, 30 November 1798 (Jefferson Papers)
...of the signature; at foot of text: “Mr. Niemcewicz.”...Niemcewicz’s last letter, that of 3 Sep...
4From Thomas Jefferson to Julian Ursin Niemcewicz, 16 January 1799 (Jefferson Papers)
); at foot of text: “Mr. Niemcewicz”; endorsed by TJ in ink on verso.Niemcewicz to TJ, 3 Sep. 1798
5From Thomas Jefferson to Julian Ursin Niemcewicz, 11 January 1801 (Jefferson Papers)
); at foot of text: “M. Niemcewicz”; endorsed by TJ in ink on verso....letter from mr Niemcewicz...
6From Thomas Jefferson to Julian Ursin Niemcewicz, 29 June 1801 (Jefferson Papers)
...); faint; at foot of page: “Mr. Julien Niemcewicz”; endorsed by TJ in ink on verso.
7From Thomas Jefferson to Julian Ursin Niemcewicz, 22 April 1807 (Jefferson Papers)
I recieved on the 20th. your favor of the 10th. inst. and yesterday I wrote to desire the...