He is the author of Declarations of Dependence: The Long Reconstruction of Popular Politics in the South, 1861-1908 (UNC Press, 2011) and After Appomattox: Military Occupation and the Ends of War (Harvard, 2015) and (with Kate Masur) co-editor of The World the Civil War Made and co-author of the National Park Service National Historic Landmark Theme Study on Reconstruction.