1Thomas Jefferson to Isaac Briggs, 27 February 1816 (Jefferson Papers)
Briggs, Isaac; letters to [index entry]
2Thomas Jefferson to Isaac Briggs, 17 April 1816 (Jefferson Papers)
Briggs, Isaac; letters to [index entry]
3Thomas Jefferson to Isaac Briggs, 18 May 1817 (Jefferson Papers)
Briggs, Isaac; letters to [index entry]