1Thomas Jefferson to Samuel K. Jennings, 23 September 1815 (Jefferson Papers)
cinchona (Peruvian bark); use of [index entry]
2Enclosure: Richard Channing Moore to David Hosack, 20 October 1806 (Jefferson Papers)
cinchona (Peruvian bark); use of [index entry]
3Enclosure: Benjamin Rush to Vine Utley, 25 June 1812 (Jefferson Papers)
cinchona (Peruvian bark); use of [index entry]