William Welles Bosworth
(1868-1966) was an American architect whose most famous designs include MIT's Cambridge campus, the AT&T Building in New York City, and the Theodore N. Vail mansion in Morristown, New Jersey (1916), now the Morristown Town Hall. Bosworth was also responsible to a large degree for the architectural expression of Kykuit, the famous Rockefeller family estate north of Tarrytown, New York, working closely with the architects William Adams Delano and Chester H. Aldrich and the interior designer, Ogden Codman.
Bosworth is not as well known in the United States as other Beaux-Arts architects of that time, because his career, under the auspices of John D. Rockefeller, Jr., led him to France in the 1920s, where he was put in charge of the restoration of the Palace of Versailles and Notre-Dame de Reims, projects Rockefeller was interested in and that he generously financed. In time, Bosworth was awarded the French Legion of Honor and the French Cross of the Commander of the Order of Arts and Letters, one of the few Americans ever to receive such honors.