Brown, William Wells:

(1814-1884) An African American author and conductor of the Underground Railroad, Wells wrote and spoke about the abolitionist movement. He wrote numerous books about his life and learnings from being born into slavery and escaping.
http://www.pbs.org/wnet/aaworld/reference/articles/william_wells_brown.html

Source: Horton, James Oliver, and Lois E. Horton. Slavery and the Making of America. New York: Oxford, 2006. 122-123.