Historical clue formulations

• Snitched on, with "out" — 2017-11-12
• Named names, maybe — 2014-06-20
• Squealed on, with "out" — 2014-03-05
• Squealed (on) — 2014-02-05
• Turned informer — 2009-12-13
• Squealed (on) — 2008-01-14
• Like some hair — 2002-06-01
• Sang — 2001-03-02
• Told (on) — 2000-12-04
• Sang — 1999-03-19
• Sang — 1998-02-08
• Told (on) — 1997-11-27
• Told (on) — 1995-02-22
• Like some hair — 1994-08-24