1Oliver Barrett to Thomas Jefferson, 10 April 1812 (Jefferson Papers)
Thornton, William; as agent for O. Barrett [index entry]
2Thomas Jefferson to William Thornton, 24 April 1812 (Jefferson Papers)
Thornton, William; as agent for O. Barrett [index entry]
3Enclosure: William Cranch to William Thornton, 9 May 1812 (Jefferson Papers)
Thornton, William; as agent for O. Barrett [index entry]
4William Thornton to Thomas Jefferson, 8 May 1812 (Jefferson Papers)
Thornton, William; as agent for O. Barrett [index entry]