Allen C. Guelzo is a New York Times best-selling author, senior research scholar in the Council of the Humanities at Princeton University, and the director of the Initiative on Politics and Statesmanship for Princeton's James Madison Program in American Ideals and Institutions. His acclaimed nonfiction books about the Civil War and early nineteenth-century American history, include The New York Times bestseller Gettysburg: The Last Invasion (Knopf), Robert E. Lee: A Life (Knopf), Reconstruction: A Concise History (Oxford University Press), and Redeeming the Great Emancipator (Harvard University Press). He is a three-time recipient of the Lincoln Prize and many other honors, including the Guggenheim-Lehrman Prize for Military History and Wall Street Journal Best Books of the Year. He lives in Pennsylvania. Learn more at AllenGuelzo.com.