This looks like a helpful resource: Race and Liberty in America: The Essential Reader. John Miller says “It reproduces everything from excerpts of the Declaration of Independence and the speeches of Frederick Douglass to the modern-day works of Shelby Steele and Clarence Thomas.”

Here’s a blurb by Juan Williams:

If you are interested in the real history of the Civil Rights movement in America — the radical ideas that set it in motion no matter where they came from — get ready for an intellectual thrill ride. There is no time for political posturing here. Race and Liberty in America is full of revelations and stunning in its honesty.