Associate professor history Graduate Center and Lehman College, New York City, 1998—2005. National Endowment of the Humanities distinguished professor Colgate University, since 2005. Visiting professor history California Institute of Technology, Pasadena, 1993—1996.
O'Connor visiting professor American Institutions Colgate University, 2003—2004. Visiting professor history University of California at Los Angeles, 1996—1998.