Historical clue formulations

• Visiting the Natl. Museum of African American History and Culture, say — 2022-10-19
• Visiting the nation's capital, for short — 2017-03-30
• Where to find the Capitol and the Library of Cong. — 2016-05-05
• Visiting the Library of Cong., say — 2015-04-01
• Visiting the U.S. Capitol, say — 2012-11-22
• Visiting the U.S. capital — 2008-11-23
• Where to find Pennsylvania Ave. — 2005-04-21
• Where the U.S. Cong. is — 2003-02-09