1Charles J. Ingersoll to Thomas Jefferson, 4 July 1818 (Jefferson Papers)
Dialogues and Detached Sentences in the Chinese Language; with a free and verbal Translation in English (R. Morrison) [index entry]
2Thomas Jefferson to Charles J. Ingersoll, 20 July 1818 (Jefferson Papers)
Dialogues and Detached Sentences in the Chinese Language; with a free and verbal Translation in English (R. Morrison) [index entry]