United States. History. Civil War. Negro troops. No. 1-3 in *"*20th".Cab.14.11 Wagner, Colonel Louis. | Photographs of Camp William Penn, Philadelphia, Pa. Being the camp of negro soldiers commanded by Col. Louis Wagner. |Philadelphia. 1865.| (3) photographs. Size, 10 13} inches, mounted on cards, size 15¢ 19 3/8 inches. Silver prints. Accompanied by a letter from Col. Wagner, pre- senting the photographs to Benson J. Lossing.