He uses the example of the recent Cyprus adventure, and how twitter sources led him to an old New York Times article from 2008 that added historical context to his exploration of the topic.
The Historical Association told the BBC the reference to King John was not in its lesson plan but in an article it had published, in which the point was to show pupils that film depictions of historical figures "may not be a true representation of the past".
Private-equity executive David Rubenstein gave the first known map of the U.S. made after the Revolution to the Library of Congress and not the National Archives, as was incorrectly implied in one reference in a U.S. News article on Monday about Mr. Rubenstein's purchases of historical papers.