Historical clue formulations

• Hang-up — 2026-08-21
• Travel by pick-up? — 2026-05-14
• Thumb a ride — 2013-10-22
• Minor difficulty — 2013-10-21
• Snag — 2013-10-20
• Tow bar — 2013-07-20
• Trailer's connection to a car — 2009-06-22
• Thumb — 1999-12-08
• Thumb — 1998-06-06