Confederacy, C.M. Prison, Columbia, S.C., prisoner of war letter datelined "C.M. Prison, Columbia, S.C. Dec 1st 1864" from Lt. P. Bishop of the "6th U.S. Artillery", addressed on outer leaf to Lieut. Hiram B. Martin, 6th U.S. Artillery at Memphis, Tenn., minor overall toning, F.-V.F. Estimate  $400 - 600. Lt. Peter Bischoff was captured at Fort Pillow, Tenn. on April 12, 1864, and was confined at Columbia S.C. Bischoff was a white officer in the 11th U.S. Colored Troops - designated 6th Heavy Artillery. In the letter Peter signs his name as "P. Bishop". Perhaps because the Confederacy did not take too kindly to colored troops or white officers who led them. $0 (Image)