High Quality Content by WIKIPEDIA articles! The Longfellow House–Washington`s Headquarters National Historic Site, also known as the Vassall-Craigie-Longfellow House and, until December 2010, Longfellow National Historic Site, is a historic site located at 105 Brattle Street in Cambridge, Massachusetts. For almost fifty years, it was the home of noted American poet Henry Wadsworth Longfellow. For a time, it had previously served as the headquarters of George Washington.