Gary Gallagher talked about his body of work on the U.S. Civil War and about his life, his career, and his interest in the Civil War. He also talked about American politics at the time of the Civil War, ways in which slavery shaped American history, and the importance of several Civil War battles. He also responded to telephone calls, electronic mail, and videotaped questions. A video was shown of part of a tour Mr. Gallagher conducted of the Antietam National Battlefield in Sharpsburg, Maryland, on July 15, 2006. The tour was given to high school history teachers from Taos, New Mexico, as part of a U.S. Department of Education program called Teaching American History. A video clip was shown of Mr. Gallagher in his home office in Charlottesville, Virginia, as he described his working habits. A video, which was taped in the BookTV Bus while in Minneapolis, was shown of a reader asking the author a question. Gary Gallagher is the University of Virginia Professor in the History of