Historical clue formulations

• Sources of some syrup — 2025-04-06
• Fall color providers — 2020-01-19
• Trees sought by leaf peepers — 2011-12-23
• Syrup sources — 2011-10-04
• They're tapped in the woods — 2007-07-08
• They may be tapped — 2003-05-17
• "The ___ redden in the sun": Bryant — 1997-03-16
• Whence much color of fall — 1997-03-14
• Street shaders — 1995-10-08
• Red and silver, e.g. — 1994-11-20