Garrett Morgan's descendants hope a DNA test will prove what the family has believed for more than a century - that the inventor is the grandson of Confederate Col. John Morgan, of the Civil War's "Morgan Raiders." But even without that distinction, Garrett earned his place in history for designing the three-light traffic signal, and a gas mask he used to rescue men trapped in a Cleveland tunnel.

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Music: Audionautix- The Great Unknown, and The Great Phospher- Daniel Birch

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