American Historian, Pioneer of Colonial American Legal History and the Early History of American Labor, Scholar of the Constitutional, Diplomatic, and Political History of the American Revolution and the Making of the United States Constitution

: An American historian best known for his pioneering work in colonial American legal history and the early history of American labor. In later years, he shifted his research interests to the constitutional, diplomatic, and political history of the American Revolution and the making of the United States Constitution. (From: Wikipedia.org.)