An American historian, he is best known for America in the King Years, a three-part biography of
He earned an M.A. in public affairs from Princeton University in 1970. He later taught history and politics at Goucher College.
He received the Dayton Literary Peace Prize in 2008.
He married Christy Branch in 1978; the couple raised two children, Macy and Franklin.
His historical trilogy, America in the King Years, focuses on the life of Martin Luther King, Jr.