Herbert Hoover (1874-1964)

• United States White House
  Official Presidential information site of the U.S. White House
• American President
  Biographies of all the the American Presidents

Richard Nixon (1913-1994)

• United States White House
  Official Presidential information site of the U.S. White House
• American Presidents
  Biographies of all the the American Presidents

George S. Patton, Jr. (1885–1945)

• See American Leaders/Government

Ronald Regan (1911-2004)

• United States White House
  Official Presidential information site of the U.S. White House
• American Presidents
  Biographies of all the the American Presidents
• Time 100: Ronald Regan

Earl Warren (1891–1974) - Supreme Court

• Landmark Cases
• Great Norwegians