Librarian of Congress James H. Billington engages noted author and historian David MCullough in a discussion on John Adams. Speaker Biography: James H. Billington is the 13th Librarian of the United States Congress. Speaker Biography: David McCullough is an American author, narrator, historian, and lecturer. He is a two-time winner of the Pulitzer Prize and the National Book Award and a recipient of the Presidential Medal of Freedom, the United States' highest civilian award. For transcript, captions, and more information, visit www.loc.gov/today/cyberlc/feature_wdesc.php?rec=6245