Allen C. Guelzo is the Thomas W. Smith Distinguished Research Scholar in the James Madison Program in American Ideals and Institutions at Princeton University, where he also directs the Madison Program’s Initiative on Politics and Statesmanship. He is the author of Abraham Lincoln: Redeemer President, Lincoln’s Emancipation Proclamation: The End of Slavery in America, and Lincoln and Douglas: The Debates That Defined America. His book on the battle of Gettysburg, Gettysburg: The Last Invasion was a New York Timesbest seller in 2013. From 2006 to 2012, he was a member of the National Council on the Humanities. Together with Patrick Allitt and Gary W. Gallagher, he team-taught The Teaching Company’s American History series, and has completed other five series for The Teaching Company. He has written Reconstruction: A Concise History (Oxford University Press, 2019), and Robert E. Lee: A Life (Knopf, 2021) which was named by the Wall Street Journal as one of Ten Best Books for 2021. His newest books are Our Ancient Faith: Lincoln, Democracy and the American Experiment (Knopf, 2024), which won the Abraham Lincoln Institute Book Prize, and Voices from Gettysburg: Letters, Papers, and Memoirs from the Greatest Battle of the Civil War (Kensington Press, 2024).