Throughout a lengthy public career, Rufus King employed his considerable diplomatic and oratorical skills to promote the twin causes of nationalism and civil liberty, fighting in the last decade of his life to extend those liberties to the nation's enslaved black minority. This booklet on King is one in a series on veterans of the Revolutionary War who were also signers of the U.S. Constitution. It covers: (1) King's struggles to gain education, support his father's family, and overcome accusations of disloyalty to the patriot's cause; (2) his military service in the infantry; and (3) his public service to Massachusetts as a delegate to the Constitutional Convention and as a U.S. Senator. Personal data about King and suggestions for further readings are also included. (DJC)