Today in History for Thursday, April 12th

Highlights for this day in history: President Franklin Roosevelt dies; American Civil War starts; Soviet cosmonaut becomes first man to fly in space; David Letterman born. (April 12) Subscribe to the Associated Press: http://bit.ly/APYouTube Download AP Mobile: http://www.ap.org/mobile/ Associated Press on Facebook: http://apne.ws/c7lQTV Associated Press on Twitter: http://apne.ws/bTquhb Associated Press on Google+: http://bit.ly/zuTKBL