The challenge here was to pack a lot of history into a 7-9 minute speech, setting Lincoln’s political and moral choices in the context of his time. My primary source was “Lincoln,” the biography by David Herbert Donald, particularly for the material about the Lincoln-Douglas debates and the speaking styles of the two men. – David F. Carr
Notes: The audio is a bit faint, even though I was using a wireless microphone to try to improve that. Also, it sounds like near the end I said “Declaration of Independence” when I meant the “Emancipation Proclamation.”