1Thomas Cooper to Thomas Jefferson, 21 June 1819 (Jefferson Papers)
Cooper, Thomas (1759–1839); and botanist for University of Virginia [index entry]
2Thomas Jefferson to Thomas Cooper, 11 July 1819 (Jefferson Papers)
Cooper, Thomas (1759–1839); and botanist for University of Virginia [index entry]
3Thomas Cooper to Thomas Jefferson, 28 July 1819 (Jefferson Papers)
Cooper, Thomas (1759–1839); and botanist for University of Virginia [index entry]