Historical clue formulations

• The (middle) sound of "silence" — 2025-08-17
• Start or end for Alexa? — 2023-09-13
• Sound represented by an upside-down "e" — 2023-02-13
• Beginning or end for Alexa? — 2022-12-08
• Either side of Alaska? — 2022-05-14
• It begins "again" — 2022-03-10
• "America" begins and ends with this — 2019-12-11
• Beginning or end of "Athena" — 2014-06-17
• Vowel sound represented by an upside-down "e" — 2013-08-27
• Either the first or last vowel sound in "Alaska" — 2012-03-19
• Unstressed vowel — 2011-12-13
• End of an era? — 2011-05-20
• Unstressed vowel symbol — 2011-04-25
• One of two in Canada? — 2008-12-20
• Pronunciation indicator — 2003-02-20
• "Long Island" sound — 2002-07-04
• Inverted "e" — 2000-07-20
• Pronunciation symbol — 1998-12-31
• Either end of Alaska — 1998-08-02
• Vowel sound — 1998-05-26
• Pronunciation symbol — 1997-06-02
• Pronunciation symbol — 1996-08-07
• Unstressed vowel — 1995-08-29
• Pronunciation symbol — 1995-08-06
• Unstressed vowel — 1995-06-05
• Unstressed vowel — 1995-05-23
• Vowel sound — 1995-02-21
• Pronunciation symbol — 1994-09-30