Mary Ann Shadd Cary was an educator and abolitionist. She was the first black woman to graduate from Howard University Law School and the first black woman to vote in a federal election. She helped President Lincoln enlist black men to fight for the Union and her house was frequently a safe haven in the Underground Railroad for slaves fleeing the South. After the war she became a school principal, and then a lawyer in Washington, D.C., at the age of sixty. She died in 1893 at age seventy from heart failure, with an estate valued at $150.