Mary Frances Berry is Geraldine R. Segal Professor of American Social Thought and Professor of History at the University of Pennsylvania and the former chairwoman of the United States Commission on Civil Rights. She is also the former board chair of Pacifica Radio. She is a past president of the Organization of American Historians, the primary professional organization for historians of the United States.

http://en.wikipedia.org/w/index.php?title=Mary_Frances_Berry