1Thomas Jefferson to Thomas Cooper, 14 August 1820 (Jefferson Papers)
Cooper, Thomas (1759–1839); and J. W. Baker [index entry]
2Jerman Baker to Thomas Jefferson, 26 September 1820 (Jefferson Papers)
Cooper, Thomas (1759–1839); and J. W. Baker [index entry]
3Thomas Jefferson to Jerman Baker, 6 October 1820 (Jefferson Papers)
Cooper, Thomas (1759–1839); and J. W. Baker [index entry]
4Thomas Jefferson to Thomas Cooper, 6 October 1820 (Jefferson Papers)
Cooper, Thomas (1759–1839); and J. W. Baker [index entry]