1John Adams to Thomas Jefferson, 18 July 1813 (Jefferson Papers)
Priestley, Joseph; Disquisitions Relating to Matter and Spirit [index entry]
2Thomas Jefferson to John Adams, 22 August 1813 (Jefferson Papers)
Priestley, Joseph; Disquisitions Relating to Matter and Spirit [index entry]
3Edward Postlethwayt Page to Thomas Jefferson, 16 December 1821 (Jefferson Papers)
Priestley, Joseph; Disquisitions Relating to Matter and Spirit [index entry]