1Thomas Jefferson to Pierre Samuel Du Pont de Nemours, André Thoüin, and Bartelémy de Faujas-Saint Fond, 16 May 1809 (Jefferson Papers)
Patterson, Robert; letters to accounted for [index entry]
2Thomas Jefferson to Robert Patterson, 31 August 1809 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
3Thomas Jefferson to Robert Patterson, 1 October 1809 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
4William Lambert to Thomas Jefferson, 8 December 1809 (Jefferson Papers)
Patterson, Robert; letters to accounted for [index entry]
5Thomas Jefferson to Silvain Godon, 21 May 1810 (Jefferson Papers)
Patterson, Robert; letters to accounted for [index entry]
6Thomas Jefferson to Robert Patterson, 7 March 1811 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
7Thomas Jefferson to Robert Patterson, 21 March 1811 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
8Thomas Jefferson to Robert Patterson, 11 September 1811 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
9Thomas Jefferson to Robert Patterson, 10 November 1811 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
10Thomas Jefferson to Robert Patterson, 10 November 1811 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
11Thomas Jefferson to Robert Patterson, 29 May 1812 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
12Thomas Jefferson to Robert Patterson, 9 August 1812 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
13Thomas Jefferson to Robert Patterson, 27 December 1812 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
14Thomas Jefferson to Robert Patterson, 8 April 1813 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
15Thomas Jefferson to Robert Patterson, 29 June 1814 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
16Thomas Jefferson to Robert Patterson, 23 July 1814 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
17Thomas Jefferson to Robert Patterson, 23 November 1814 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
18Thomas Jefferson to Robert Patterson, 13 October 1815 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
19Thomas Jefferson to Robert Patterson, 22 December 1815 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
20Enclosure: Ferdinand R. Hassler to Robert Patterson, 2 December 1816 (Jefferson Papers)
Patterson, Robert; letter to, from F. R. Hassler [index entry]
21Thomas Jefferson to Robert Patterson, 1 January 1817 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
22Thomas Jefferson to Robert Patterson, 18 October 1818 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
23Thomas Jefferson to Robert Patterson, 2 February 1819 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
24Thomas Jefferson to Robert Patterson, 14 March 1819 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
25Thomas Jefferson to Robert Patterson, 4 July 1819 (Jefferson Papers)
Patterson, Robert; letters to [index entry]
26Thomas Jefferson to Robert Patterson, 7 November 1820 (Jefferson Papers)
Patterson, Robert; letters to [index entry]