On Oct. 11, 2014 Professor Plummer was inducted into the American Academy of Arts and Sciences. The picture shows him signing the log book at the induction ceremony held in the Sanders Theatre at Harvard University. The American Academy of Arts and Sciences, frequently known as the American Academy, is one of the oldest and most prestigious honorary societies and a leading center for independent policy research in the United States. Election to the Academy is considered one of the nation's highest honors since its founding during the American Revolution by John Adams, John Hancock, James Bowdoin, and other scholar-patriots who contributed prominently to the establishment of the new nation, its government, and its Constitution.