Historical clue formulations

• Firmly held — 2026-09-01
• Like eyes beneath a prominent brow — 2023-03-09
• Group of profoundly insightful people? — 2021-09-13
• Recessed, as eyes — 2020-08-25
• Sunken, as eyes — 2015-08-16
• Like some eyes — 2007-08-30
• Placed far in — 2007-05-12
• Sunken — 2006-03-03
• Like some eyes — 1997-03-08
• Far back — 1996-06-14