Isaac T. Hopper (1771-1852) was a pioneer abolitionist and social reformer. He is sometimes considered to be the “Father of the Underground Railroad”.
David Ruggles was New York’s most radical, infamous, and hated black abolitionist, and the chief operative of the New York Committee of Vigilance.
Henry Highland Garnet was a radical New York abolitionist. 1843 he called for slaves to rise up. 1865 he spoke as first black man in the US Capitol.