The local history museum is going to be hosting an exhibition of items related to African-American history. The prize item is an original speech handwritten by Martin Luther King, Jr. It is locked inside a special travel case so that it can't be damaged or stolen while being shipped Unfortunately, the courier lost his list of the combinations that open the locks! But he does remember that they all had to do with famous African-Americans. Can you figure out what the missing codes are and unlock the box?