MICHAEL VORENBERG is a professor of history at Brown University, in Providence, Rhode Island. He is the author of Final Freedom: The Civil War, the Abolition of Slavery, and the Thirteenth Amendment, which was a finalist for the Lincoln Prize and a key source for Steven Spielberg’s 2012 film, Lincoln. He is also the author of The Emancipation Proclamation: A Brief History with Documents, as well as a number of essays on slavery, emancipation, and the U.S. Constitution. His writings have appeared in the Chicago Tribune, The New York Times, Politico, and The Washington Post.
