Profiles of people in power: the world's government leaders by 
Heads of States and Governments by 
Who's Who in Political Revolutions by A Biographical Congressional Directory with an outline history of the National Congress by Biographical Directory of the American Congress 1774-1961 by Black Americans in Congress, 1870-2007 by 
Directors of Central Intelligence As Leaders of the U. S. Intelligence Community, 1946-2005 by Hispanic Americans in Congress, 1822-2012 by 
