1John Adams to Thomas Jefferson, 11 June 1813 (Jefferson Papers)
Johnson, Samuel; The Lives of the Most Eminent English Poets [index entry]
2Thomas Cooper to Thomas Jefferson, 15 September 1814 (Jefferson Papers)
Johnson, Samuel; The Lives of the Most Eminent English Poets [index entry]
3Donald Fraser to Thomas Jefferson, 10 October 1819 (Jefferson Papers)
Johnson, Samuel; The Lives of the Most Eminent English Poets [index entry]