Historical clue formulations

• See 44-Down — 2023-06-28
• Where firedamp can form — 2014-09-26
• Where pit stops are made to get fuel? — 2009-05-22
• Vein locale — 2008-01-24
• Rich source of fossil fuel — 2003-05-27
• +Seamy locale — 1996-10-06
• See notepad — 1994-09-28