Sources
Library of Congress
- http://www.loc.gov/
- http://www.loc.gov/pictures/item/97516592/
- http://www.loc.gov/pictures/item/2003668338/
- http://www.civilwar.org/education/history/civil-war-overview/northandsouth.html
- http://www.history.com/topics/american-civil-war/fort-sumter