Historical clue formulations

• Word with blue or open — 2025-12-20
• Hits high in the air — 2025-05-31
• Heavens — 2024-07-29
• "Blue ___," classic Irving Berlin tune — 2024-07-16
• Heaven, with "the" — 2020-09-05
• Irving Berlin's "Blue ___" — 2019-08-12
• "Blue ___" (Irving Berlin tune) — 2018-10-26
• Somewhere over the rainbow they're blue, in song — 2018-06-10
• Jumps higher than, in sports slang — 2016-08-21
• They're "friendly" in an ad campaign — 2015-01-09
• Heavens — 2014-05-25
• "Nothin' but blue ___" — 2013-09-02
• "Friendly" things, in old ads — 2011-07-23
• Heavens above — 2005-02-11
• Irving Berlin's "Blue ___" — 2004-01-24
• Irving Berlin's "Blue ___" — 2001-04-10
• Meteorologists' study — 1999-10-09
• High places — 1999-07-03
• Irving Berlin's "Blue _____" — 1995-04-11