Historical clue formulations

• They might help with the dishes — 2022-03-25
• File box filler — 2019-07-17
• They're sometimes secret — 2009-05-17
• File box contents — 2005-12-29
• Chef's collection — 2003-03-18
• File box contents, maybe — 2003-02-21
• Sets of instructions — 2002-05-04
• Cook's collection — 1999-09-26
• Cooks' "secrets" — 1999-07-12
• Grandma's secrets? — 1999-06-06
• File box filler — 1999-02-21