James McPherson talked about his book, Crossroads of Freedom. This book focused on the Battle of Antietam, which was not only the bloodiest battle in the U.S. Civil War, but in American history. He talked about the role of Antietam in turning the Civil War from an uncertain future into a likely Union victory.

James McPherson is the author of Crossroads of Freedom: Antietam, Pivotal Moments in American History, published by Oxford University Press.