Historical clue formulations

• Something one can pay for free — 2023-07-22
• Tribute — 2022-05-08
• Tribute — 2019-12-22
• Something paid to a hero — 2019-01-27
• Show of respect — 2013-05-07
• Tribute — 2012-09-30
• Respectful tribute — 2007-08-20
• Payment of respect — 2006-02-21
• Tribute — 2001-06-20
• Expression of respect — 1997-10-26
• Respect — 1994-04-05