659. ANDREW A. HUMPHREYS (1810-1883) Union major general who was at Antietam, Chancellorsville, and Gettysburg. Humphreys' replaced Hancock, as commander of the 2nd Corps, after the Battle of Gettysburg. L.S. "A. A. Humphreys" on Chief of Engineers letterhead, 1p. 4to., Washington, D.C., Jan. 22, 1876, to Congressman Martin Townsend sending a requested copy of the Annual Report of the Chief of Engineers for 1870. Soiling and light feathering to ink, good. $60-80