1Hugh Williamson and Samuel L. Mitchill to Thomas Jefferson, 15 July 1815 (Jefferson Papers)
Mitchill, Samuel Latham; letters from [index entry]
2Samuel L. Mitchill to Thomas Jefferson, 10 February 1817 (Jefferson Papers)
Mitchill, Samuel Latham; letters from [index entry]
3Samuel L. Mitchill to Thomas Jefferson, 11 March 1817 (Jefferson Papers)
Mitchill, Samuel Latham; letters from [index entry]
4Samuel L. Mitchill to Thomas Jefferson, 4 May 1819 (Jefferson Papers)
Mitchill, Samuel Latham; letters from [index entry]
5Samuel L. Mitchill to Thomas Jefferson, 21 May 1819 (Jefferson Papers)
Mitchill, Samuel Latham; letters from [index entry]
6Samuel L. Mitchill to Thomas Jefferson, 16 May 1820 (Jefferson Papers)
Mitchill, Samuel Latham; letters from [index entry]