Historical clue formulations

• By some measure — 2025-08-29
• Description of this puzzle's circled letters, and a clue to what they spell — 2024-12-11
• By some measure — 2017-07-15
• "You could look at it this way ..." — 2009-10-02
• From a particular perspective — 2009-05-29
• By a certain measure — 2008-06-14