Boyd, J. (Ed.). (1950-1995). The papers of Thomas Jefferson. Princeton, NJ: Princeton University Press.
2.
Buffon, C. (1807-1812). Natural history, a theory of the earth, a general history of man, of the brute creation and of vegetables, minerals, etc.London: H. D. Symonds.
3.
Ellis, J. J. (1997). American sphinx: The character of Thomas Jefferson. New York: Knopf.
4.
Ford, P. L. (Ed.). (1904-1905). The works of Thomas Jefferson. New York: G. P. Putnam's Sons.
5.
Gibbon, E. (1994). The history of the decline and fall of the Roman empire (Vol. 1). London: The Penguin Press. (Original work published 1776)
6.
Jefferson, T. (1954). Notes on the State of Virginia. Chapel Hill: University of North Carolina Press. (Original work published 1787)
7.
Jefferson, T. (1959). Autobiography. New York: Capricorn Books. (Original work published 1829)
8.
Jordan, W. D. (1968). White over Black: American attitudes toward the Negro, 1550 to 1812. Chapel Hill: University of North Carolina Press.
9.
Lipscomb, A. A., & Bergh, A. E. (Eds.). (1905). The writings of Thomas Jefferson. Washington, DC: Thomas Jefferson Memorial Association.
10.
Miller, J. C. (1977). The wolf by the ears. New York: Free Press.
11.
Morgan, E. S. (1975). American slavery, American freedom. New York: W. W. Norton and Co.
12.
Peterson, M. (1970). Thomas Jefferson and the new nation: A biography. New York: Oxford University Press.