Test your knowledge about Dr. Martin Luther King Jr.

By J. Scott Wilson
Library of Congress, LC-USZ62-122996

1963: Martin Luther King Jr. pens his "Letter from Birmingham Jail" while incarcerated in Birmingham, Alabama, for protesting against racial segregation by Birmingham's city government and downtown retailers.

Monday is Dr. Martin Luther King Jr. Day across the nation.

King died nearly 50 years ago and left behind a legacy that will last for decades. 

Test your knowledge about one of our greatest men.