1800 -- 
The Library of Congress is established.

1564 -- 
William Shakespeare is Born

1970 --
       The first "Earth Day"
        is observed

1865 -- President Lincolns body leaves Washington D.C. by way of train making many stops along the way to burial in Springfield, Illinois.  (Above Right) is the procession of Lincolns body to the statehouse in Columbus, Ohio for public viewing. The journey/procession from Washington D.C. to Springfield, Illinois, lasted 13 days

1999 -- Columbine High School massacre, 
                     Killing 12 students and 1 teacher 

1775 -- The American Revolution begins at Lexington and Concord 

1897 -- The First Boston Marathon is ran

1971 -- The first demonstration of Vietnam Veterans against the war 

1995 -- The Oklahoma City bombing, the worst act of terrorism on U.S. soil by an

                    American, Timothy McVeigh, killing 168 people, 19 of which were young 

1775 -- Paul Revere and William Dawes ride to warn of upcoming British attack

1906 -- The Great San Francisco earthquake strikes causing mass damage and chaos along

2012 -- Dick Clark, Legendary host of "American Bandstand" and "New Years Rockin' Eve," Passes away

1961-- Bay of Pigs Invasion begins

1970 -- NASA's Apollo 13 returns home

1940 -- Bob Feller throws his first no-hitter for the Cleveland Indians against the
               Chicago White Sox 

2007 -- The massacre at Virginia Tech kills 32 people 


1865 -- President Lincoln is pronounced dead at 7:22 A.M. from gunshot wound from 
                     previous night

1912 -- Cruise Ship "The Titanic" sinks after striking ice berg in the Atlantic 

1947 -- Jackie Robinson breaks "The Color Barrier" by becoming the first African-American in
              Major League Baseball 

2013 -- The bombing at the Boston Marathon; many casualties suffered