Historical clue formulations

• Steel girder — 2026-01-18
• Girder whose name assumes a serif font — 2025-11-02
• Skyscraper construction piece — 2025-06-03
• Skyscraper support — 2024-01-04
• Seat in the iconic photo "Lunch Atop a Skyscraper" — 2022-05-10
• Building support — 2021-05-22
• Letter-shaped girder — 2021-03-23
• Flanged structural support — 2019-12-01
• Letter-shaped construction piece — 2019-07-18
• Construction piece that describes what happens when you compliment me? — 2019-07-06
• Construction girder — 2019-07-02
• Seat in the classic photograph "Lunch Atop a Skyscraper" — 2019-04-21
• Girder type — 2019-03-13
• Letter-shaped girder — 2017-01-30
• Girder also known as a rolled-steel joist — 2016-12-22
• Letter-shaped construction piece — 2015-12-30
• Letter-shaped building support — 2015-03-23
• Building component with two flanges — 2014-08-14
• Letter-shaped construction piece — 2011-08-08
• Construction piece — 2011-06-29
• Letter-shaped support — 2011-04-03
• Skyscraper support — 2010-08-15
• Construction girder — 2009-02-25
• Piece that gets riveted — 2008-11-16
• Structural support — 2008-08-02
• Letter-shaped support — 2007-11-20
• Letter-shaped skyscraper support — 2007-07-23
• Rolled steel joist — 2006-09-30
• Construction piece — 2006-08-21
• Steel bar — 2005-11-24
• Construction girder — 2005-04-26
• Construction girder — 2004-11-24
• High-rise support — 2003-10-15
• Girder — 2002-12-19
• Construction piece — 2002-06-10
• Construction piece — 2002-05-16
• Construction site sight — 2002-04-05
• Construction element — 2001-10-10
• Steel girder — 2001-06-11
• Structural member — 2000-12-26
• Construction girder — 2000-02-02
• Skyscraper construction unit — 1997-03-20
• Means of support — 1996-07-06
• Girder — 1996-01-28
• Construction member — 1995-10-08
• Girder — 1995-02-09
• Letter-shaped metal bar — 1994-05-23
• Load-bearing steel — 1994-03-11
• Skyscraper support — 1994-02-06