the Commonwealth of Massachusetts. June 1, 2010閲覧。 ^ “Members of the 111th Congress”. UnitedStatesSenate. October 18, 2009閲覧。 ^ “Massachusetts Congressional
Capitals of the UnitedStates”. Senate.gov (2009年3月26日). 2010年7月31日閲覧。 ^ “Pennsylvania ratifies the Constitution of 1787”. Memory.loc.gov. 2010年7月31日閲覧。 ^
Washington Post, June 19, 2005 The UnitedStatesSenate designates Robert Byrd as President Pro Tempore Emeritus of the UnitedStatesSenate at Congress.gov
gov/history/Timeline/detail.aspx?id=205 2010年2月26日閲覧。 ^ Lange, Greg (2003-02-15), Washington is admitted as the 42nd state to the UnitedStates of America on November