Historical clue formulations

• ChatGPT, Claude, etc. — 2026-05-21
• ChatGPT and Google Gemini, for two — 2026-01-19
• Some digital assistants, informally — 2025-03-21
• "___ for apple" — 2023-09-05
• The Terminator and HAL 9000, for two — 2022-09-13
• "___ for Alibi" — 2017-03-24
• Start of an alphabet book — 2014-07-25
• "___ for apple" — 2014-01-20
• Grafton's "___ for Alibi" — 2013-12-06
• Start of an alphabet book — 2012-02-02
• Start of some picture books — 2011-01-29
• Grafton's "___ for Alibi" — 2009-02-25
• "___ for Alibi" — 2007-11-09
• Sue Grafton's "___ for Alibi" — 2007-08-05
• Sue Grafton's "___ for Alibi" — 2003-07-12
• Sue Grafton's "___ for Alibi" — 1998-10-04
• Sloths — 1996-03-16
• Three-toed sloths — 1994-10-28