He is Ford Foundation Professor of History at Mount Holyoke College and author of
American Sphinx: The Character of Thomas Jefferson, winner of the 1997
National Book Award. He was one of the many Jefferson historians who considered
the Jefferson-Hemings relationship unlikely.
She is professor of law at New York Law School and author of Thomas
Jefferson and Sally Hemings: An American Controversy. Her book,
published before the DNA test results, gathers a wide array of non-DNA
based evidence pointing to a long, enduring relationship between Thomas
Jefferson and Sally Hemings.
She is the Senior Research Historian at the Thomas Jefferson Memorial
Foundation and probably the leading expert on slave life at Monticello. She is also director
of the Getting Word Oral History project, which records the oral histories
of the descendants of Monticello's slaves.
He designed and carried out the DNA testing which confirmed Thomas Jefferson
fathered at least one of Sally Hemings's children. He is a retired professor
of pathology at Tufts University and the University of Virginia.