Historical clue formulations

• Toy shooter — 2025-03-13
• Image on the back of a $50 bill — 2020-07-25
• Building pictured on the back of a $50 bill — 2020-05-25
• Site on the National Mall — 2018-11-23
• Legislation station? — 2010-11-19
• National Mall sight — 2009-05-10
• Congressional meeting place — 1999-08-23
• Lawmaking locale — 1997-04-20