Union general whose cavalry command finally blocked Lee’s escape at Appomattox. ALS signed “P. H. Sheridan, Lt. General,” one page both sides, 5.25 x 8.5, May 25, 1871. Letter of introduction for a friend, “Guil Milroy one of my old friends, who is on his way to Cheyenne. Any attention to him will be appreciated by your sincere friend.” In fine condition, with bisecting mailing folds and a trivial shade of toning. R&R COA.