1Benjamin Waterhouse to Thomas Jefferson, 1 September 1815 (Jefferson Papers)
Unitarianism; in New England [index entry]
2Benjamin Waterhouse to Thomas Jefferson, 8 June 1822 (Jefferson Papers)
Unitarianism; in New England [index entry]
3Benjamin Waterhouse to Thomas Jefferson, 14 September 1822 (Jefferson Papers)
Unitarianism; in New England [index entry]