Historical clue formulations

• Series after the opener? — 2012-12-08
• A train? — 2007-04-19
• String after A — 2003-03-17
• Alphabet trio — 2003-02-13
• A following? — 2002-08-09
• A train? — 2002-04-07
• Three before E — 2000-02-09
• Alphabet trio — 1999-12-03
• Rows after A — 1995-09-18
• Kindergartner's trio — 1995-06-04