1Samuel K. Jennings to Thomas Jefferson, 13 September 1815 (Jefferson Papers)
A Plain, Elementary Explanation of the Nature and Cure of Disease (S. K. Jennings) [index entry]
2Thomas Jefferson to Samuel K. Jennings, 23 September 1815 (Jefferson Papers)
A Plain, Elementary Explanation of the Nature and Cure of Disease (S. K. Jennings) [index entry]