Stephan Thernstrom is Professor of History, Harvard University, and Director of the Charles Warren Center for Studies in American History.
Ann Orlov is a freelance writer and consultant. From 1968 to 1975 she was Editor for the Behavioral Sciences at Harvard University Press.
Oscar Handlin, a Pulitzer Prize–winning historian, was Carl M. Loeb University Professor, Emeritus, at Harvard University. He was the editor of This Was America.