Historical clue formulations

• River of song — 2022-09-30
• River of old song — 2021-11-21
• River of song — 2020-12-26
• River in Stephen Foster's "Old Folks at Home" — 2016-11-01
• Al Jolson standard — 2015-08-16
• River of song — 2013-10-27
• Gershwin's first hit — 2011-06-11
• Al Jolson classic — 2010-03-15
• Al Jolson standard — 2004-12-28
• "Old Folks at Home" river — 2004-11-09
• George Gershwin's first hit song — 2003-05-11
• Jolson's river of song — 2000-02-15
• Gershwin's first hit — 1999-10-17
• Classic Caesar/Gershwin tune of 1919 — 1999-08-08
• Classic Gershwin song — 1997-02-23
• Jolson song — 1994-07-31
• 1919 Gershwin tune — 1994-03-05
• Al Jolson hit — 1993-12-26