The Army of the Potomac, 1863, Lithograph with tint stone, Image: 17 1/16 ? 27 3/16 in. (43. 3 ? 69 cm), Prints, This lithograph details the Union army?s supply wagons and soldiers retreating down the Virginia Peninsula during the Seven Days Fight, a series of battles fought between June 25 and July 1, 1862. Once Major General George McClellan?s attempt to take the Confederate capital of Richmond had failed, his army was forced back to the James River