US National Archives
Our Documents: Telegram Announcing the Surrender of Fort Sumter (1861)
Offers an image of the original telegram from Major Anderson announcing his surrender of Fort Sumter. Discusses this event and the historical events surrounding it.
Civil War Home
Home of the American Civil War: The War Begins
Provides a detailed description of the attack on Fort Sumter during the Civil War from Confederate Military History, Vol. 5, Chapter I, a series published in 1899.