Benjamin Banneker developed the first clock built in the United States, studied astronomy and developed an almanac which he published for many years. Banneker also helped to create the layout of the building, streets, and monuments for the Nation's Capitol - Washington, D.C.
Benjamin Banneker was born in 1731 just outside of Baltimore, Maryland, the son of a slave. After his father died in 1759, Banneker lived with his mother ...