1To John Adams from Oliver Wolcott, Jr., 20 October 1797 (Adams Papers)
...The effect of the weather is uniform: cool weather & frosts are unfavourable to the sick, but...
2Thomas Jefferson to Albert Gallatin, 8 September 1816 (Jefferson Papers)
weather; frost [index entry]
3Philadelphia Society for Promoting Agriculture to Thomas Jefferson, 13 November 1816 (Jefferson Papers)
weather; frost [index entry]
4Thomas Jefferson to Elizabeth Trist, 23 November 1816 (Jefferson Papers)
weather; frost [index entry]
5Matthew Brown to Thomas Jefferson, 10 December 1817 (Jefferson Papers)
weather; frost [index entry]
6Enclosure: Thomas Jefferson’s Summary of Weather Observations, 1810–1816, [ca. 11 April 1818] (Jefferson Papers)
weather; frost [index entry]
7Enclosure: Petty Vaughan’s Notes on Rutabaga (Swedish Turnip), 29 March 1819, enclosure number 1 in Petty Vaughan to … (Jefferson Papers)
weather; frost [index entry]
8Benjamin Vaughan to Thomas Jefferson, 6 April 1819 (Jefferson Papers)
weather; frost [index entry]
9William Oliver Vaughan to Thomas Jefferson, 25 April 1819 (Jefferson Papers)
weather; frost [index entry]
10Joel Yancey to Thomas Jefferson, 14 October 1819 (Jefferson Papers)
weather; frost [index entry]