A stirring image of the USS Monitor and the CSS Virginia (Merrimack) engaged in a historic naval battle off the coast of Hampton Roads, Virginia, during the early days of the war.

A haunting depiction of a freed slave, dressed in tattered clothing, walking away from a burning plantation in the Deep South, symbolizing the end of the institution of slavery and the beginning of a new era of freedom.

A dramatic illustration of the Battle of Gettysburg, with Union and Confederate soldiers clashing in the midst of a smoky, sun-scorched battlefield, as the iconic Gettysburg Address is being delivered in the background by President Abraham Lincoln.