1Thomas Jefferson to James Madison, 26 November 1809 (Jefferson Papers)
Pernier (Purney), John; account with M. Lewis [index entry]
2Thomas Jefferson to William D. Meriwether, 21 August 1810 (Jefferson Papers)
Pernier (Purney), John; account with M. Lewis [index entry]
3Thomas Jefferson to John Christoph Süverman, 23 September 1810 (Jefferson Papers)
Pernier (Purney), John; account with M. Lewis [index entry]