Historical clue formulations

• Feature of "woulda," "coulda" or "shoulda" — 2024-07-25
• Something close to a colonel's heart? — 2021-09-05
• It occurs twice in "chalk talk" — 2016-09-14
• What always comes in halves? — 2015-02-08
• Calf part — 2011-06-24
• Calf feature — 2007-09-16
• Llama's head? — 2004-02-03