Union general who served under Col. John A. Logan; he was assassinated after the war while serving as a politician in the Dakota Territory (1837–1873). Uncommon ALS signed “Ed. S. McCook,” one page, lightly-lined, 4.75 x 7.75, Washington, January 30, 1868. Letter to a colonel. In full: “I understand that some one has told the President that I had said or promised my appointments to Gen’l Logan. This is false I never had any conversation with Gen’l Logan on the subject as I can prove by the Gen’l himself. I will assure the President that will do nothing if get the appointment [sic] that will displease him or his friends.” Professionally inlaid into a slightly larger sheet. In fine condition, with a few tack holes to the top. RR Auction COA.