Historical clue formulations

• Bit of foam, perhaps — 2024-09-13
• ... It's a legume — 2019-12-01
• Cracker Jack ingredient — 2018-07-22
• Bit of cushioning — 2017-02-12
• Mr. ___ of advertising — 2010-06-06
• Squirt — 2007-08-17
• Treat for an elephant — 2005-01-24
• Insignificant one — 2004-04-30
• Subject for George Washington Carver — 1997-01-14