Keith Harris received his BA at the University of California at Los Angeles (summa cum laude) and his Ph.D. in United States history at the University of Virginia. He has taught courses in United States history at the University of Virginia and the University of California at Riverside and currently chairs the history department and teaches at Shalhevet High School in Los Angeles. His work focuses on nineteenth and twentieth-century American history with a special emphasis on the Civil War, reconstruction, historical memory, and national reconciliation. He is the author of Across the Bloody Chasm: The Culture of Commemoration Among Civil War Veterans and Mastering the Past: Unlocking Excellence in High School History. He is currently writing a series of essays on American exceptionalism and the monuments at Gettysburg. He lives and works in Hollywood, California.