1Thomas Jefferson to Thomas Ritchie, 22 May 1809 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
2Thomas Jefferson to Thomas Ritchie, 19 January 1810 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
3Thomas Jefferson to Thomas Ritchie, 15 March 1810 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
4Thomas Jefferson to Thomas Ritchie, 19 September 1813 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
5Thomas Jefferson to Thomas Ritchie, 15 August 1814 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
6Thomas Jefferson to Thomas Ritchie, 27 September 1814 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry] Ritchie, Thomas; letters to accounted for [index entry]
7Thomas Jefferson to Thomas Ritchie, 20 October 1815 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
8Thomas Jefferson to Thomas Ritchie, 21 January 1816 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
9Thomas Jefferson to Thomas Ritchie, 8 March 1816 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]
10Thomas Jefferson to Thomas Ritchie, 6 April 1816 (Jefferson Papers)
Ritchie, Thomas; letters to [index entry]