Historical clue formulations

• Person reached by dialing 0: Abbr. — 2026-03-05
• Touch-tone phone abbr. — 2024-11-24
• Abbr. above "0" on some phones — 2023-06-06
• Abbr. above "0" — 2023-01-25
• Abbr. near zero — 2022-01-14
• Abbr. below "0" on a phone — 2021-02-22
• Abbr. on a 0 button — 2020-12-07
• Letters no longer seen on most phones — 2020-11-01
• Abbr. next to a star — 2020-01-03
• Abbr. between * and # — 2019-10-27
• Abbr. above "0" — 2019-06-19
• Abbr. on a phone dial — 2019-03-10
• It's just below 0: Abbr. — 2018-11-25
• Phone button abbr. — 2015-12-06
• Person who's a zero?: Abbr. — 2015-02-05
• Switchboard attendant: Abbr. — 2014-10-21
• Telephone keypad abbr. — 2014-06-25
• Dial button sharing the "0" — 2014-05-12
• Phone abbr. — 2014-01-05
• Abbr. above 0 on a phone — 2013-11-18
• Phone button — 2013-11-03
• Phone abbr. — 2013-05-26
• It can be found under TUV — 2012-12-18
• It's just under 8: Abbr. — 2012-10-03
• Job largely automated these days: Abbr. — 2012-07-21
• Button between * and # — 2010-06-08
• Phone abbr. — 2010-03-28
• It's to the left of # — 2008-12-04
• Button below TUV — 2008-10-22
• Button next to a * — 2008-06-22
• Phone co. employee — 2008-05-25
• Phone button — 2007-06-24
• Abbr. to the right of a star — 2007-04-27
• Phone button — 2007-01-30
• It's to the left of # — 2007-01-11
• Key next to * — 2004-11-03
• 0 on a phone: Abbr. — 2004-09-27
• Phone abbr. — 2004-06-06
• 0 letters — 2004-01-08
• Abbr. on some dials — 2003-10-04
• Abbr. on some dials — 2003-07-18
• 0 on a phone: Abbr. — 2003-01-27
• Switchboard worker: Abbr. — 2002-11-18
• Button below the 8 — 2002-05-05
• Phone abbr. — 2002-02-12
• Person who's a zero?: Abbr. — 2001-12-08
• Letters above 0 — 2001-06-27
• Abbr. above zero — 1999-03-14
• 0, on a telephone: Abbr. — 1998-11-16
• Letters above 0 — 1998-08-22