1Ezra Stiles Ely to Thomas Jefferson, 14 June 1819 (Jefferson Papers)
Conversations on the Science of the Human Mind (E. S. Ely) [index entry]
2Thomas Jefferson to Ezra Stiles Ely, 25 June 1819 (Jefferson Papers)
Conversations on the Science of the Human Mind (E. S. Ely) [index entry]