1John Adams to Thomas Jefferson, 3 December 1813 (Jefferson Papers)
Nicaea; ecumenical council at [index entry]
2John Adams to Thomas Jefferson, 24 August 1815 (Jefferson Papers)
Nicaea; ecumenical council at [index entry]
3Thomas Jefferson to Thomas Cooper, 14 August 1820 (Jefferson Papers)
Nicaea; ecumenical council at [index entry]
4Thomas Jefferson to John Adams, 15 August 1820 (Jefferson Papers)
Nicaea; ecumenical council at [index entry]