Historical clue formulations

• Recollection, say — 2026-08-14
• Opening of many a speech — 2018-12-13
• Speech opener, often — 2015-03-13
• Speaker's aid — 2014-01-16
• Toast lead-in, at times — 2012-06-23
• Small yarn? — 2011-08-05
• Brief story that might open a speech — 2011-06-13
• Short reminiscence — 2010-05-04
• Opening of many a speech — 2005-07-27
• Speech enlivener — 2005-02-13
• Garrison Keillor specialty — 2000-06-11
• Personal account — 1999-11-28