Historical clue formulations

• Org. in '70s headlines — 2012-04-05
• 1970s radical grp. — 2011-11-05
• 1970s radical org. — 2011-09-19
• Grp. in 1974 news — 2011-08-06
• 1974 kidnap org. — 2010-08-11
• 1970s kidnapping grp. — 2010-04-09
• Radical 1970s grp. — 2010-04-02
• Patty Hearst kidnap grp. — 2009-08-18
• Captors of Patty Hearst: Abbr. — 2008-03-12
• 1970's radical grp. — 2005-09-23
• Hearst kidnap grp. — 2005-08-09
• 1974 kidnap grp. — 2005-05-21
• ... — 2004-01-15
• Org. in 70's news — 2003-10-02
• 1970's grp. whose symbol was a seven-headed serpent — 2003-09-13
• Grp. famously involved in bank robberies — 2003-07-20
• Patty Hearst captors, in brief — 2002-12-15
• Kidnappers in 70's news — 2002-08-14
• Patty Hearst's kidnap grp. — 2002-03-05
• Patty Hearst kidnap grp. — 2001-09-20
• Patty Hearst kidnap grp. — 2001-06-09
• Kidnappers in 1974 news: Abbr. — 2001-04-13
• Patty Hearst kidnap grp. — 2000-06-30
• Hearst's captors: Abbr. — 2000-04-28
• Hearst kidnap grp. — 2000-03-31
• Hearst's captors: Abbr. — 1999-04-17
• 70's kidnappers — 1998-10-01
• 70's terrorist org. — 1998-05-26
• 70's extremist grp. — 1997-10-04
• 1970's guerrilla grp. — 1997-08-23
• 1974 abduction grp. — 1997-07-05
• Patty Hearst's kidnap grp. — 1996-10-29
• Kidnapping grp., 1974 — 1994-08-04