Report of the Joint Committee on the Conduct of the War : Army of the Potomac; Battle of Petersburg: hearings before the United States Joint Committee on the Conduct of the War, Thirty-Eighth Congress, second session and Thirty-Eighth Congress, first session, on Feb. 25, 26, Mar. 1, 3-5, 7-10, 11, 21-23, 25, 28, 29, Apr. 1, 4, 8, 18, 27, 1864, Feb. 1, Mar. 13, Apr. 12, May 16, 18, 1865.