Historical clue formulations

• Plow puller of old — 2026-09-09
• Stubborn farm animal — 2025-08-18
• Cocktail served in a copper mug, familiarly — 2024-08-01
• Backless shoe — 2022-09-18
• Cocktail made with ginger beer — 2022-07-03
• Workhorse that's only part horse — 2022-05-17
• Symbol of stubbornness — 2021-04-13
• Farm animal that kicks — 2020-11-09
• Drug ___ — 2020-06-17
• Animal relative of a hinny — 2020-01-01
• Half-assed sort? — 2019-11-07
• Stubborn animal — 2017-07-31
• Pack animal — 2017-03-20
• Lounging slipper — 2016-12-22
• Drug smuggler — 2016-07-16
• 60-Down mascot — 2015-09-29
• Hybrid animal — 2014-11-23
• Pack carrier — 2014-08-03
• Stubborn animal — 2014-07-21
• Drug smuggler's courier — 2014-05-14
• Person taking drugs — 2013-07-13
• Grand Canyon rental — 2013-01-20
• Pack carrier — 2010-09-30
• Obstinate type — 2008-07-26
• Cart puller — 2007-04-17
• Stubborn animal — 2004-09-20
• Symbol of stubbornness — 2004-03-03
• Pack animal — 2003-09-17
• Stubborn beast — 2003-01-27
• Slipper — 2002-11-17
• Lounging footwear — 2002-03-08
• Stubborn beast — 2002-02-11
• Stubborn sort — 2002-01-09
• Bedroom slipper — 2001-11-18
• Uncooperative one — 2000-11-22
• Plodding sort — 1999-08-29
• Stubborn sort — 1999-06-30
• One who won't budge — 1999-04-22
• Part of a wagon train — 1998-01-25
• Slipper without a back — 1997-03-16
• Stubborn one — 1996-05-14
• Wagon train puller — 1995-03-06
• Slipper — 1995-02-02
• Part of a wagon train — 1994-08-02
• House slipper — 1994-06-21
• Army mascot — 1994-06-19
• Obstinate one — 1994-04-04