1Isaac A. Coles to Thomas Jefferson, 12 November 1809 (Jefferson Papers)
Livingston, Robert R.; Essay on Sheep [index entry]
2Thomas Jefferson to Isaac A. Coles, 29 November 1809 (Jefferson Papers)
Livingston, Robert R.; Essay on Sheep [index entry]
3Enclosure: Thomas Jefferson’s Catalogue of Books on Agriculture, [ca. 16 December 1809] (Jefferson Papers)
Livingston, Robert R.; Essay on Sheep [index entry]
4William Thornton to Thomas Jefferson, 4 September 1810 (Jefferson Papers)
Livingston, Robert R.; Essay on Sheep [index entry]
5Thomas Jefferson to Robert R. Livingston, 20 April 1812 (Jefferson Papers)
Livingston, Robert R.; Essay on Sheep [index entry]
6William Thornton to Thomas Jefferson, 27 June 1812 (Jefferson Papers)
Livingston, Robert R.; Essay on Sheep [index entry]
7Enclosure: Thomas Jefferson’s Catalogue of Books on Agriculture, [ca. 3 March 1817] (Jefferson Papers)
Livingston, Robert R.; Essay on Sheep [index entry]