Consider reading some of Toni Morrison’s other works, including Beloved and The Bluest Eye.
Consider reading work by some of Morrison's contemporaries, like Toni Cade Bambara and Gwendolyn Brooks.
Consider reading (or listening to) other speeches by prominent African-Americans, like those found on the American RadioWorks website (http://americanradioworks.publicradio.org/features/blackspeech/).