Historical clue formulations

• Cockatoo feature — 2025-09-26
• Feature of a cockatoo — 2025-03-04
• Part of a coat of arms — 2023-04-25
• High point — 2019-12-02
• Prominent cockatoo feature — 2019-09-18
• Peak — 2016-07-30
• Top of a wave — 2015-10-05
• Cockatoo topper — 2015-04-22
• Top of a wave — 2014-07-21
• It represents a family on a coat of arms — 2013-12-23
• Colgate rival — 2012-12-18
• Waveform maximum — 2011-10-15
• Peak of a wave — 2011-05-23
• Trough's opposite — 2010-11-12
• Roadrunner feature — 2010-09-10
• Umbrella bird's "umbrella" — 2009-11-20
• Cardinal's topper — 2009-11-15
• Colgate rival — 2009-09-18
• Place for a motto — 2008-08-28
• Surfing spot — 2008-05-18
• Hit the top — 2007-03-04
• Peak — 2006-09-22
• Family insignia — 2006-06-13
• Trough's opposite — 2006-03-03
• Peak — 2006-02-06
• High point — 2006-01-26
• Toothpaste brand — 2005-01-17
• Dragon's head feature — 2004-09-12
• Comb — 2000-06-04
• Swell top — 1998-03-08
• Helmet plume — 1997-07-25
• Colgate rival — 1997-04-06
• Procter & Gamble toothpaste — 1995-09-25
• Flood point — 1995-07-30
• High point — 1994-10-22
• Kingfisher's coif — 1994-02-01