Historical clue formulations

• Soprano Tebaldi — 2018-04-29
• Opera's Tebaldi — 2016-04-19
• Soprano Tebaldi — 2010-11-14
• Author Adler — 2002-09-29
• Opera's Scotto — 2001-04-12
• Soprano Scotto — 1998-07-19
• Italian soprano Scotto — 1997-05-26
• Soprano Scotto — 1995-02-04