WAMC Speakers Corner WAMC Special Encore Power of Words: Martin Luther King Jr.'s I Have A Dream Speech WAMC Northeast Public Radio | By David Guistina Published January 22, 2015 at 12:45 PM EST Facebook Twitter LinkedIn Listen • 55:00 Mike Licht, NotionsCapital.com; source: Library of Congress WAMC Special Encore Power of Words: Martin Luther King Jr.'s I Have A Dream Speech.