1Francis Adrian Van der Kemp to Thomas Jefferson, 10 December 1818 (Jefferson Papers)
Christianity; and trinitarian doctrine [index entry]
2Timothy Pickering to Thomas Jefferson, 12 February 1821 (Jefferson Papers)
Christianity; and Trinitarian doctrine [index entry]
3Thomas Jefferson to Timothy Pickering, 27 February 1821 (Jefferson Papers)
Christianity; and Trinitarian doctrine [index entry]
4Thomas Jefferson to John M. Goodenow, 13 June 1822 (Jefferson Papers)
Christianity; and Trinitarian doctrine [index entry]