Historical clue formulations

• Former F.B.I. chief Louis — 2014-12-23
• F.B.I. director appointed by Clinton — 2008-01-13
• Former F.B.I. chief Louis — 2006-08-15
• F.B.I. chief after Sessions — 2004-12-31
• Louis of the F.B.I. — 2001-05-22
• F.B.I. director after Sessions — 1999-09-03