1Reuben Haines to Thomas Jefferson, 24 February 1818 (Jefferson Papers)
Philadelphia; Academy of Natural Sciences of Philadelphia [index entry]
2Thomas Jefferson to Reuben Haines, 18 May 1818 (Jefferson Papers)
Philadelphia; Academy of Natural Sciences of Philadelphia [index entry]
3Benjamin Vaughan’s Notes on Climate Change, March 1819 (Jefferson Papers)
Philadelphia; Academy of Natural Sciences of Philadelphia [index entry]
4Enclosure: Recommendations for Constantine S. Rafinesque, [ca. 3] April 1821 (Jefferson Papers)
Philadelphia; Academy of Natural Sciences of Philadelphia [index entry]