Historical clue formulations

• Unflinching — 2025-01-16
• Unrelenting — 2021-03-06
• Coldly determined — 2020-06-21
• Hard — 2020-05-24
• Unyielding — 2014-04-16
• Coldly determined — 2014-02-27
• Like a cold, hard gaze — 2013-05-28
• Intense, as a gaze — 2013-01-27
• Unbending — 2007-10-21
• Unyielding — 2007-02-04
• Intense, as a gaze — 2006-03-26
• Hard — 2003-12-20
• Hard — 2003-05-14
• Unbending — 2001-08-10
• Blue-gray — 1998-08-17
• Unbending — 1998-06-10
• Hard — 1998-01-25
• Stalwart — 1994-11-20