Henry Johnson served in the 369th Infantry Regiment, a unit of the U.S. Army that was composed primarily of African American soldiers and later became known as the "Harlem Hellfighters." Learn more in this scene from "Harlem Hellfighters".

Born to formerly enslaved parents, Lewis Latimer drew Bell’s telephone plans and later advised Edison on inventing the light bulb.

Colonel Charles Young overcame racism to rise through the ranks and create his legacy in the great outdoors.

In the 19th century, train collisions happened at alarming rates. The problem was that rail workers couldn't properly communicate with each other. That is, until Granville T. Woods, better known as Black Edison, changed everything.