Gary W. Gallagher, a Civil War historian and University of Virginia professor, is joining UVa’s Miller Center as a senior faculty associate. Gallagher, who has written and edited more than 30 books on the Civil War, will supervise the center’s Historical Presidency lecture series. The new series offers perspective on changes in presidential leadership over the years. The theme for the 2013-14 academic year will be “The American Presidency and the Crises of the Nineteenth Century.”