1Thomas Jefferson to Joseph Slaughter, 17 May 1812 (Jefferson Papers)
Weather Memorandum Book (Thomas Jefferson) [index entry]
2Thomas Jefferson to Patrick Gibson, 21 January 1813 (Jefferson Papers)
Weather Memorandum Book (Thomas Jefferson) [index entry]
3Thomas Jefferson to Amos Hamlin, 1 April 1818 (Jefferson Papers)
Weather Memorandum Book (Thomas Jefferson) [index entry]
4Thomas Jefferson to Jacob Bigelow, 11 April 1818 (Jefferson Papers)
Weather Memorandum Book (Thomas Jefferson) [index entry]
5Enclosure: Thomas Jefferson’s Summary of Weather Observations, 1810–1816, [ca. 11 April 1818] (Jefferson Papers)
Weather Memorandum Book (Thomas Jefferson) [index entry]
6Benjamin Vaughan’s Notes on Climate Change, March 1819 (Jefferson Papers)
Weather Memorandum Book (Thomas Jefferson) [index entry]