Historical clue formulations

• Super conductors? — 2023-11-29
• Excellent conductors — 2020-02-16
• Toscanini and Maazel — 2014-11-13
• Toscanini and others — 2005-11-25
• Leaders in pits — 2005-05-06
• Leaders in pits — 2004-06-18
• Experts — 2001-01-27
• Toscanini and others — 1999-09-25