This Day in History for April 20 – Columbine Massacre and More

Here’s a look at some interesting events that took place on this day in history:

1861 – Robert E. Lee resigns his commission in the US Army in order to command the forces of Virginia (More info)

1902 – Pierre and Marie Curie isolate radium (More info)

1916 – The Chicago Cubs play their first game at Weeghman Park, which later becomes Wrigley Field (More info)

1999 – Two students kill 13 people and injure 24 others before committing suicide at Columbine High School in Colorado (More info)

2008 – Danica Patrick wins the Indy Japan 300, becoming the first female driver to win an Indy car race (More info)