Helen F. M. Leary, "Sally Hemings's Children: A Genealogical Analysis of the Evidence," National Genealogical Society Quarterly, Vol. 89, no. 3 (Sep. 2001), 165-207. [1] (页面存档备份,存于互联网档案馆)
Helen F. M. Leary, "Sally Hemings's Children: A Genealogical Analysis of the Evidence," National Genealogical Society Quarterly, Vol. 89, no. 3 (Sep. 2001), 165-207. [1] (页面存档备份,存于互联网档案馆)