1Bernard McMahon to Thomas Jefferson, 28 February 1812 (Jefferson Papers)
trees; F. A. Michaux catalogues [index entry]
2John Vaughan to Thomas Jefferson, 1 May 1812 (Jefferson Papers)
trees; F. A. Michaux catalogues [index entry]
3Thomas Jefferson to François André Michaux, 14 December 1813 (Jefferson Papers)
trees; F. A. Michaux catalogues [index entry]
4John Vaughan to Thomas Jefferson, 9 January 1815 (Jefferson Papers)
trees; F. A. Michaux catalogues [index entry]
5Thomas Jefferson to John Vaughan, 8 February 1815 (Jefferson Papers)
trees; F. A. Michaux catalogues [index entry]
6John Vaughan to Thomas Jefferson, 19 March 1815 (Jefferson Papers)
trees; F. A. Michaux catalogues [index entry]