The Military Collection recently acquired a lithograph commemorating the Confederate prison camp at Andersonville, Georgia. Entitled Let us forgive but not forget, it was published in Chicago in 1884 by the Shober & Carqueville Lith. Company for 50 cents per copy, and the subtitle reads: ‘Dedicated to my fellow survivors and to all sons of veterans, in memory of 14,000 martyrs who perished in Andersonville Prison, Stockade, and Hospital. Yours truly in F.C. & L. Felix La Baume’. Beneath the image is another caption: ‘”The only true and correct picture of the horrible slaughter 
pen, copied from the original pencil sketch made by Felix LaBaume, Sergeant of Co. ‘E’, 39th Regt, N.Y. Vet. Vols., who was a prisoner of war at Andersonville from July 9, 1864, to April 19, 1865. Dr. John C. Bates, C.S.A. produced the original sketch on the trial of Capt. Wirz, and it was filed with the records of the trial as important evidence.”
There is some debate about the origins of this image and the person credited with its inception, Felix La Baume. The Andersonville National Park site has a page entitled Myth: The Mystery of Felix de la Baume. According to some accounts, the testimony of the latter was crucial to the trial of the camp commandant, Henry Wirz but it turns out he may never had been in the prison-camp, and furthermore may have been a deserter. Nonetheless, the image attempts to capture some of the horrific conditions endured by Union prisoners in the camp. We see men chained together while others are being tortured. One prisoner is being put into stocks, another is being screwed into a torture pole with an iron neck collar, while a third is being shot at.