Like many immigrants to the American colonies, Thomas Fitzsimons demonstrated his devotion to his adopted land by helping to defend it during the Revolutionary War. This booklet on Fitzsimons is one in a series on Revolutionary War soldiers who signed the U.S. Constitution, and it covers his political involvement in Philadelphia's (Pennsylvania) protest against the Coercive Acts, his military service, and his public service to Pennsylvania as a delegate to the Constitutional Convention and as a legislator. Personal data about Fitzsimons and a bibliographic essay of further readings are also included. (DJC)