Resources
Art is provided by The Art Institute of Chicago:
http://www.civilwarinart.org/exhibits/show/causes/introduction
Gettysburg Image: www.history.com/topics/american-civil-war/battle-of-gettysburg
http://www.civilwarinart.org/exhibits/show/causes/introduction
Gettysburg Image: www.history.com/topics/american-civil-war/battle-of-gettysburg