His work has reshaped both African-American History and Early American History by unpacking the ways in which revolutionary era blacks, in particular AME Church founder Richard Allen, contributed as "founding fathers." The major thrust of his biography of Richard Allen was to describe how Allen was able to create lasting black institutions, initiate a tradition of black prophetic leadership and precipitate civic institutions that came to define the Early American Republic. This historiographical emphasis coincides with a resurgence in scholarly interest in the white founders--those figures normally associated with the founding of the United States of America--challenging assumptions about the role of blacks in that process. Alan Taylor praised Freedom's Prophet for rescuing black agency and casting "African Americans as active makers of the American republic." On top of receiving high praise in reviews, Freedom's Prophet won ForeWord’s Book of the Year Gold Award for Biography in 2009.