1Thomas Jefferson: Analysis of Weather Memorandum Book, January 1817 (Jefferson Papers)
natural history; observations on [index entry]
2John Manners to Thomas Jefferson, 20 May 1817 (Jefferson Papers)
natural history; observations on [index entry]
3Thomas Cooper to Thomas Jefferson, 21 August 1818 (Jefferson Papers)
natural history; observations on [index entry]
4Thomas Cooper to Thomas Jefferson, 26 August 1818 (Jefferson Papers)
natural history; observations on [index entry]
5Thomas Jefferson to Thomas Cooper, 12 September 1818 (Jefferson Papers)
natural history; observations on [index entry]