1Thomas Jefferson to Thomas W. Maury, 3 February 1816 (Jefferson Papers)
2Thomas Jefferson to John Wood, 1 April 1816 (Jefferson Papers)
3Thomas Jefferson to Wilson Cary Nicholas, 2 April 1816 (Jefferson Papers)
4Thomas Jefferson to Isaac Briggs, 17 April 1816 (Jefferson Papers)
5Thomas Jefferson to Wilson Cary Nicholas, 19 April 1816 (Jefferson Papers)