Historical clue formulations

• ___ badge — 2026-03-19
• Professor ___ (title for some retirees) — 2025-12-09
• Like many retired professors — 2024-02-04
• Professor ___ — 2022-11-04
• Title for a retired professor — 2020-02-15
• Honored academic retiree — 2015-11-01
• Many a retired academic — 2015-10-16
• Professor ___ — 2014-06-07
• Like some professors — 2012-11-17
• Retired, as a female professor — 2010-02-01
• Retiree's title — 2005-05-24
• Retiree's title — 2004-04-28
• Professor ___ — 1998-08-16
• Retired — 1997-08-30
• Retired — 1996-02-09