David Herbert Donald (1920 - 2009) was a distinguished historian, longtime chair of the graduate program in American history at Harvard, and a leading authority on the Civil War era and the presidency of Abraham Lincoln. Donald's first book, published in 1948, was a study of Lincoln's controversial law partner, William Herndon. In the 1950s, Donald emerged as a leading authority on the Civil War era. After teaching at Columbia and Princeton, he held an endowed chair at Harvard University, where he headed the graduate program in American history. He won two Pulitzer Prizes, for his...