FORT SUMTER, S.C., April 12, 1861 — 3.20 a.m.
SIR: By authority of Brigadier-General Beauregard, commanding the Provisional Forces of the Confederate States, we have the honor to notify you that he will open the fire of his batteries on Fort Sumter in one hour from this time.
We have the honor to be, very respectfully, your obedient servants,
JAMES CHESNUT, JR.,
STEPHEN D. LEE,
Captain, C. S. Army, Aide-de-Camp.
Maj. ROBERT ANDERSON,
U. S. Army, Commanding Fort Sumter.
SOURCE: Samuel Wylie Crawford, The Genesis of the Civil War: The Story of Sumter, 1860-1861, p. 426; The War of the Rebellion: A Compilation of the Official Records of the Union and Confederate Armies, Series I, Volume 1 (Serial No. 1), p. 14.