1Enclosure: Amos Hamlin’s Meteorological Observations, [by 12 January 1818] (Jefferson Papers)
agriculture; and weather [index entry]
2Thomas Jefferson to Wilson Cary Nicholas, 26 March 1818 (Jefferson Papers)
agriculture; and weather [index entry]
3Bernard Peyton to Thomas Jefferson, 22 August 1822 (1st letter) (Jefferson Papers)
agriculture; and weather [index entry]