Historical clue formulations

• Word after back or snack — 2026-04-17
• Prepare for a trip — 2025-04-22
• Bunch of wolves or cards — 2022-02-28
• Get ready for vacation — 2021-10-10
• Risky thing to do close to flight time — 2021-04-17
• Get ready, in a way — 2020-03-21
• Bunch of wolves — 2018-05-08
• Cigarette purchase — 2018-04-11
• Bring along — 2016-05-15
• Stuff — 2016-03-25
• Cigarette purchase — 2015-07-07
• Load — 2013-02-09
• Cram — 2012-08-19
• Have heat — 2009-09-03
• Lies together? — 2007-02-03
• Smoker's purchase — 2002-12-05
• Smoker's purchase — 1999-11-25
• Excise tax unit — 1998-05-29