Historical clue formulations

• Road trip stopovers — 2026-09-20
• Things often found near cloverleafs — 2020-07-29
• Some TripAdvisor listings — 2020-06-26
• Things commonly advertised along interstates — 2016-11-18
• Roadside sights — 2010-05-27
• Roadside stops — 2004-10-11
• Highway interchange sights — 2000-01-26
• Parts of chains — 1997-12-19
• Holiday Inns — 1995-09-20