Historical clue formulations

• Pitch-altering clamps on guitars — 2026-05-27
• Guitar accessories — 2023-12-19
• Mafia bosses — 2019-12-31
• Guitar accessories — 2019-05-18
• Heads of families — 2018-03-07
• Mob bosses — 2015-02-02
• Guitar accessories — 2013-02-27
• Underworld bosses — 2010-08-08
• Cosa Nostra leaders — 2010-01-18
• Mafia bosses — 2010-01-04
• Mafia dons — 2009-02-24
• Neck attachments — 2008-05-08
• Mafia bosses — 2008-04-28
• Mob honchos — 2006-11-22
• Family heads — 2004-08-14
• Syndicate heads — 2002-02-15
• Bars for guitars — 1998-10-07
• Crime bosses — 1997-10-29
• Mafia V.I.P.'s — 1996-07-09