American Battlefield Trust
American Battlefield Trust: Civil War: Animated Map: Fort Sumter
Animated map tells the story of the events that led up to the first shots of the Civil War fired at Fort Sumter. [7:31]
Virginia Historical Society
Virginia Historical Society: The Portent: John Brown's Raid in American Memory
Online companion of an exhibition mounted in 2009 to commemorate the anniversary of John Brown's raid on Harpers Ferry examines Brown's role as a catalyst of the American Civil War.