[ Autographs ] Ulysses S. Grant 1822-1885 Eighteenth President of the United States and Union Lieutenant General. A.L.S. on Head Quarters Armies of the United States letterhead, 2pp. 8vo., Washington, June 28, 1867 to Union Rear Admiral David D. Porter 1813-1891 as Superintendent of the Naval Academy. In part: ''..This will be handed to you by midshipman Charles Roberts of the Marine Fleet who served under you on the Mississippi River in [18]63 Mr. Roberts is about entering the Naval Academy and being a modest Western boy desired this letter to assure him on his first reporting. I hope you will give him good advice to inspire confidence... "A nice association