1Thomas Jefferson to John Adams, 24 January 1814 (Jefferson Papers)
Newton, Sir Isaac; TJ on [index entry]
2Thomas Jefferson to John Brazer, 24 August 1819 (Jefferson Papers)
Newton, Sir Isaac; TJ on [index entry]
3Thomas Jefferson to Benjamin Rush, 16 January 1811 (Jefferson Papers)
Newton, Sir Isaac; TJ on [index entry]
4Thomas Jefferson to Benjamin Waterhouse, 3 March 1818 (Jefferson Papers)
Newton, Sir Isaac; TJ on [index entry]