Historical clue formulations

• Boston University athlete — 2025-05-23
• Toto in "The Wizard of Oz," e.g. — 2022-06-28
• Energetic pooch — 2017-06-04
• Wirehaired dog — 2013-11-18
• One producing 50-Across — 2011-09-30
• Popular rat-baiting dog in Victorian England — 2010-08-06
• Game pursuer — 2009-04-12
• Bull ___ — 2006-12-09
• Boston ___ — 2001-05-05
• Wirehair, e.g. — 2000-08-21
• Monopoly game marker — 1999-03-19
• Airedale, for one — 1998-02-02