Historical clue formulations

• Tourist's aid — 2024-07-21
• Traveler's aid — 2023-06-02
• Tour leader — 2023-01-23
• Expedition hiree — 2019-11-23
• Shepherd — 2019-10-18
• Dog, for some — 2019-06-02
• Tour leader — 2018-12-12
• Leading figure — 2017-03-31
• Tour leader — 2016-08-16
• See 8-Down — 2016-07-04
• Virgil, for Dante — 2015-02-15
• Lighthouse, e.g. — 2012-11-18
• Seeing Eye dog, e.g. — 2010-04-19
• Sacagawea, for one — 2008-11-26
• Sherpa — 2004-02-01
• Tourist's aid — 2003-12-30
• Sacagawea, e.g. — 2003-04-30
• Sacagawea, for one — 2001-06-27
• Tour leader — 1998-07-27
• Conduct — 1996-11-17
• Sacajawea, for one — 1996-08-25
• Tour leader — 1995-01-03