Benjamin Banneker was born free when most blacks in this country were still enslaved. But it troubled him that not all blacks were free. An accomplished astronomer and mathematician, he decided to take a stand against slavery by writing to then-Secretary of State Thomas Jefferson. This is the story of their extraordinary correspondence.

Benjamin Banneker was born free when most blacks in this country were still enslaved. But it troubled him that not all blacks were free. An accomplished astronomer and mathematician, he decided to take a stand against slavery by writing to then-Secretary of State Thomas Jefferson. This is the story of their extraordinary correspondence.