To Lieutenant D. D. Porter

Executive Mansion, April 1, 1861

LIEUTENANT D. D. PORTER, United States Navy.

SIR:—You will proceed to New York, and with the least possible delay, assuming command of any naval steamer available, proceed to Pensacola Harbor, and at any cost or risk prevent any expedition from the mainland reaching Fort Pickens or Santa Rosa Island.

You will exhibit this order to any naval officer at Pensacola, if you deem it necessary, after you have established yourself within the harbor, and will request co-operation by the entrance of at least one other steamer.

This order, its object, and your destination will be communicated to no person whatever until you reach the harbor of Pensacola.
A. LINCOLN.

Recommended, WILLIAM H. SEWARD.