Historical clue formulations

• Duck-hunting hangout — 2025-05-27
• Window covering with adjustable slats — 2023-06-26
• Ante alternative — 2022-11-27
• Lacking any preparation — 2021-08-14
• Like some uncertain dates — 2016-12-25
• Like some turns and dates — 2015-10-29
• With 74- & 75-Across, "invisible" part of a distribution list ... or a hint to this puzzle's theme — 2012-11-01
• Like many taste tests — 2011-05-04
• 23-Across ... according to Shakespeare — 2010-02-14
• ___ as a bat — 2009-04-28
• Window item — 2003-12-14
• Unquestioning, as faith — 2001-10-16
• Duck ___ — 1997-04-04
• Window cover — 1997-03-25
• Word with date or trust — 1997-01-12
• Guided only by instruments — 1994-09-18
• Bird hunter's shelter — 1994-08-21