Which Pulitizer prize-winning newspaper based in New England used to employ Margaret Warner? 
Margaret Warner:  Before joining the "NewsHour" in 1993, she was a reporter for "The Wall Street Journal", "The San Diego Union-Tribune", the "Concord Monitor", and "Newsweek". Concord Monitor:  The "Monitor" has several times been named as one of the best small papers in America and in April 2008, the "Monitor" became a Pulitzer Prize winning paper, when photographer Preston Gannaway was honored for feature photography.
Concord Monitor