Part One: We speak with Lucas E. Morel and Jonathan W. White, editors of "Measuring the Man: The Writings of Frederick Douglass on Abraham Lincoln." This newly published book is a collection of letters, essays and speeches in which we can trace Douglass's evolving opinion of Lincoln. It includes newly discovered letters and speeches that have never been available to the public before. Part Two: from the archives- John Stauffer, author of "Giants: The Parallel Lives of Frederick Douglass and Abraham Lincoln." (published in 2009)