DOUGLAS SEEFELDT, Lecturer in History at the University of Virginia, is the Director of the Lewis and Clark Bicentennial Project. JEFFREY L. HANTMAN is Associate Professor of Anthropology and Director of the Archaeology Program at the University of Virginia. PETER S. ONUF, Thomas Jefferson Foundation Professor of History at the University of Virginia, is the author of "Jefferson's Empire: The Language of American Nationhood (Virginia).