Letter from Henry Wager Halleck to Montgomery Cunningham Meigs and John Gross Barnard, May 23, 1864
written by Henry Wager Halleck, 1815-1875 (1864); in Private and Official Correspondence of Gen. Benjamin F. Butler, During the Period of the Civil War, vol. 4 (Norwood, MA: Plimpton Press, 1917), 1007-1007