Historical clue formulations

• Tot's geometry lesson, perhaps — 2023-03-26
• Fashions — 2016-10-23
• Works, as wet clay — 2005-07-17
• Octagons, hexagons, etc. — 2005-03-21
• Phantoms — 1998-07-17
• Circles and such — 1997-01-05
• Circle and octagon, e.g. — 1994-11-22
• Fashions — 1994-11-09