- Solomon Northup. Twelve Years a Slave. New York: Penguin Books, 1853 (by Derby and Miller), 2012 (Penguin Books).
- Rachel Cole David Fiske Rachel Seligman Clifford Brown. "Solomon Northup." Britannica.com. October 01, 2013. March 12, 2019. <https://www.britannica.com/biography/Solomon-Northup>.
- History.com Editors. "Slavery in America." History.com. November 12, 2009 (January 31, 2019). March 13, 2019. <https://www.history.com/topics/black-history/slavery>.
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