1Enclosure: Amos Hamlin’s Meteorological Observations, [by 12 January 1818] (Jefferson Papers)
weather; heat [index entry]
2Thomas Jefferson to Amos Hamlin, 1 April 1818 (Jefferson Papers)
weather; heat [index entry]
3Enclosure: Thomas Jefferson’s Summary of Weather Observations, 1810–1816, [ca. 11 April 1818] (Jefferson Papers)
weather; heat [index entry]
4Extract from Elizabeth Trist to Nicholas P. Trist, 3 February 1819 (Jefferson Papers)
weather; heat [index entry]
5Charles Johnston and Elizabeth Johnston to Thomas Jefferson, 21 July 1819 (Jefferson Papers)
weather; heat [index entry]
6Martha Jefferson Randolph to Thomas Jefferson, 7 August 1819 (Jefferson Papers)
weather; heat [index entry]
7Thomas Jefferson to Thomas Mann Randolph, 9 August 1819 (Jefferson Papers)
weather; heat [index entry]
8Extracts from Ellen W. Randolph (Coolidge) to Martha Jefferson Randolph, 24 August 1819 (Jefferson Papers)
weather; heat [index entry]
9Thomas Jefferson to Patrick Gibson, 10 September 1819 (Jefferson Papers)
weather; heat [index entry]
10William J. Coffee to Thomas Jefferson, [1 September?] 1820 (Jefferson Papers)
weather; heat [index entry]