Historical clue formulations

• Device seen on a front desk — 2026-09-25
• Taco ___ — 2026-08-03
• Philadelphia's Liberty ___ — 2025-07-14
• Big Ben, e.g. — 2024-11-14
• Welcome sound for a bored student — 2024-04-26
• End-of-class sound — 2023-10-23
• Producer of some wedding rings — 2023-07-14
• Something dingy? — 2022-12-29
• Class ring? — 2021-04-09
• Drooping flower feature — 2020-01-29
• Bout ender — 2018-09-14
• Old AT&T symbol — 2018-04-11
• Producer of boxing rings — 2017-01-21
• Boxing ring producer — 2016-06-24
• Student's saver — 2016-06-05
• Toll provider? — 2015-04-16
• Sound signaling the start and end of class — 2013-12-02
• Steeple contents — 2009-09-07
• Man who found his calling? — 2007-04-19
• Carillon component — 2006-11-04
• Round end? — 2006-02-26
• Class stopper — 2005-09-09
• End-of-a-round sound — 2003-10-29
• Telephone man — 2003-01-12
• Carillon part — 2002-12-23
• Period ender — 2002-12-17
• Unit of nautical time — 2001-07-08
• Bicycle adjunct — 2000-05-04
• 13-Down source — 2000-02-06
• Round sound — 2000-02-04
• End-of-class signal — 1999-12-28
• "Saved by the ___!" — 1998-06-22
• Dinger — 1998-02-10
• Telephone man — 1995-02-26
• _____ Labs — 1994-09-28
• Campanile feature — 1994-06-26
• Big Ben, for one — 1994-03-06