Quoted in Battles and Leaders of the Civil War (1887 - 1888). This line is popularly said to have been Sedgwick's last words and to have been cut off in the middle of "distance." In fact, this was Sedgwick's second-to-last sentence and was completed before the bullet hit.
Theodore Dreiser's intended last words said to H. L. Mencken, as quoted in William Manchester "Disturber of the Peace: The Life of H.L. Mencken" (pp. 109-110), 1950.