Historical clue formulations

• Hats originating in Ecuador, despite their name — 2023-07-22
• Some wide-brimmed hats — 2022-07-31
• Headwear also known as jipijapas — 2009-12-06
• Jipijapa hats — 2003-07-13
• Boaters' relatives — 1999-03-26
• Tropical toppers — 1999-03-11
• Tropical headgear — 1998-08-21
• Straw hats — 1996-07-18