In September 1829, Walker published his appeal to African Americans entitled Walker’s Appeal, in Four Articles; Together with a Preamble, to the Coloured Citizens of the World, but in Particular, and Very Expressly, to Those of the United States of America, Written in Boston, State of Massachusetts, September 28, 1829. The purpose of the document was to encourage readers to take an active role in fighting their oppression, regardless of the risk, and to press white Americans to realize the moral and religious failure of slavery. “David Walker, 1785-1830”. University of North Carolina. Archived from the original on April 1, 2012. Retrieved June 7, 2012.