Kotz, Nick (2005). "14. Another Martyr". Judgment days: Lyndon Baines Johnson, Martin Luther King Jr., and the laws that changed America. Boston: Houghton Mifflin. p. 419. ISBN0-618-08825-3.
From the first King had liked to cite these same inspiration passages. "The arc of the moral universe is long, but it bends toward justice" is from the writings of Theodore Parker the Unitarian abolitionist minister who was King's favorite theologian. Compare the transcript of this 1957 speech given in Washington, D.C."Give Us the Ballot". Address Delivered at the Prayer Pilgrimage for Freedom, Washington D.C. 1957-05-17..
Wallechinsky, David; Wallace, Irving, eds. (1978). The People's Almanac #2. pp. 806–809. Archived from the original on February 25, 2015. Retrieved October 18, 2016.
Wallechinsky, David; Wallace, Irving, eds. (1978). The People's Almanac #2. pp. 806–809. Archived from the original on February 25, 2015. Retrieved October 18, 2016.
