FORT SUMTER, S.C., January 6, 1861.
Col. S. COOPER, Adjutant-General:
COLONEL: Through the courtesy of Governor Pickens I am enabled to make this communication, which will be taken to Washington by my brother, Larz Anderson, esq. I have the honor to report my command in excellent health and in fine spirits. We are daily adding to the strength of our position by closing up embrasures which we shall not use, mounting guns, &c. The South Carolinians are also very active in erecting batteries and preparing for a conflict, which I pray God may not occur. Batteries have been constructed bearing upon and, I presume, commanding the entrance to the harbor. They are also to-day busily at work on a battery at Fort Johnson, intended to fire against me. My position will, should there be no treachery among the workmen, whom we are compelled to retain for the present, enable me to hold this fort against any force which can be brought against me, and it would enable me, in the event of a war, to annoy the South Carolinians by preventing them from throwing supplies into their new posts except by the out-of-the-way passage through Stono River. At present, it would be dangerous and difficult for a vessel from without to enter the harbor, in consequence of the batteries which are already erected and being erected. I shall not ask for any increase of my command, because I do not know what the ulterior views of the Government are. We are now, or soon will be, cut off from all communication, unless by means of a powerful fleet, which shall have the ability to carry the batteries at the mouth of this harbor.
Trusting in God that nothing will occur to army a greater number of States than have already taken ground against the General Government,
I am, colonel, respectfully, your obedient servant,
ROBERT ANDERSON,
Major, First Artillery, Commanding.