1Thomas Jefferson to Nathaniel Chapman, 11 December 1809 (Jefferson Papers)
meteorological observations; by TJ [index entry]
2Thomas Jefferson to David Bailie Warden, 8 July 1811 (Jefferson Papers)
meteorological observations; by TJ [index entry]
3Thomas Jefferson to Joseph Slaughter, 17 May 1812 (Jefferson Papers)
meteorological observations; by TJ [index entry]
4Thomas Jefferson to Patrick Gibson, 21 January 1813 (Jefferson Papers)
meteorological observations; by TJ [index entry]
5Thomas Jefferson to Charles Willson Peale, 21 March 1815 (Jefferson Papers)
meteorological observations; by TJ [index entry]
6Thomas Jefferson to David Bailie Warden, 17 May 1816 (Jefferson Papers)
meteorological observations; by TJ [index entry]
7Thomas Jefferson: Analysis of Weather Memorandum Book, January 1817 (Jefferson Papers)
meteorological observations; by TJ [index entry]
8Thomas Jefferson to James Madison, 22 June 1817 (Jefferson Papers)
meteorological observations; by TJ [index entry]
9Joseph C. Cabell to Thomas Jefferson, 18 August 1817 (Jefferson Papers)
meteorological observations; by TJ [index entry]
10Thomas Jefferson to Amos Hamlin, 1 April 1818 (Jefferson Papers)
meteorological observations; by TJ [index entry]