1John Adams to Thomas Jefferson, 1 May 1812 (Jefferson Papers)
Adams, John; on A. Burr [index entry]
2John Adams to Thomas Jefferson, 3 May 1812 (Jefferson Papers)
Adams, John; on A. Burr [index entry]
3John Adams to Thomas Jefferson, 14 June 1813 (Jefferson Papers)
Adams, John; on A. Burr [index entry]