1Thomas Jefferson to Thomas Ritchie, [29] August 1817 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
2Thomas Jefferson to Thomas Ritchie, 1 November 1817 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
3Thomas Jefferson to Thomas Ritchie, 20 March 1818 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
4Thomas Ritchie to Thomas Jefferson, [ca. 21 May 1818] (Jefferson Papers)
Ritchie, Thomas; letters to accounted for [index entry]
5Thomas Jefferson to Thomas Ritchie, 19 June 1818 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
6Thomas Jefferson to Thomas Ritchie, 7 December 1818 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
7Thomas Jefferson to Thomas Ritchie, 14 February 1819 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
8Thomas Jefferson to Thomas Ritchie, 11 June 1819 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
9Thomas Jefferson to Thomas Ritchie, 25 December 1820 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
10Thomas Jefferson to Thomas Ritchie, 7 January 1822 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]