Historical clue formulations

• Creedence Clearwater Revival song named after a place "where cool water flows" — 2024-07-28
• Many a state boundary — 2024-06-16
• Delta connection? — 2022-10-14
• Amazon, e.g. — 2017-10-01
• 1948 John Wayne film — 2016-06-19
• Ohio or Illinois, but not Indiana — 2015-10-16
• "Cry me a ___" — 2014-02-19
• Mississippi, e.g. — 2012-02-28
• Styx, for one — 2011-08-02
• Potomac, for one — 2008-11-03
• Don or Lena — 2007-06-06
• Connecticut or Delaware — 2005-08-28
• Bank depositor? — 2003-08-30
• Colorado or Missouri — 2003-03-13
• Natural boundary — 2003-02-22
• Snake, e.g. — 2002-01-11
• Banks hold it — 2001-01-31
• Fork's place, maybe — 2000-04-21
• Its mouth is nowhere near its head — 2000-04-11
• Hudson, e.g. — 1997-08-06
• Missouri, e.g. — 1997-02-02
• Missouri or Delaware — 1996-11-25
• Ol' Man, e.g. — 1996-03-24
• Banks hold it — 1995-05-27
• Fork and mouth locale — 1995-04-08
• Snake, for one — 1994-12-03
• Late actor Phoenix — 1993-12-20