fort Sumter, March 9, 1861.
(Received A. G. O., March 12.)
Colonel S. Cooper,
Adjutant-General. United States Army.
Colonel: I have the honor to report that we can see the South Carolinians engaged this morning strengthening and extending considerably what we supposed to have been intended for a mortar battery at Fort Johnson. Small parties are also working at Nos. 9 and 10, and a very heavy force at the bend of the island, this side of No. 1. Whether they are constructing another battery there or strengthening one that is already there I cannot tell. One of my officers reports that he has counted nine 24-pounders which have been landed at Cummings Point within a week. Yesterday he saw several shot or shells which appeared to be about eight inches in diameter. They are certainly busy strengthening the batteries already constructed, and probably adding others. It appears to me that vessels will, even now, from the time they cross the bar, be under fire from the batteries on Morris Island until they get under the walls of this work. I do not speak of the batteries which have been constructed on Sullivan's Island, as I am not certain of their positions. Fort Moultrie will, of course, be a very formidable enemy.
I am, Colonel, very respectfully,
Your obedient servant,
Major First Artillery, Commanding.
colonel S. Cooper, Adjutant-General United States Army.
SOURCES: Samuel Wylie Crawford, The Genesis of the Civil War: The Story of Sumter, 1860-1861, p. 281; 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. 192.