Historical clue formulations

• Persona non ___ — 2022-04-24
• Persona non ___ — 2018-05-16
• Persona ___ (welcome guest) — 2017-04-05
• Persona non ___ — 2015-06-22
• Persona non ___ — 2009-08-10
• Persona non ___ — 2007-01-16
• Welcome, in a phrase — 2006-07-21
• Persona ___ (welcome guest) — 1996-08-23
• Persona non _____ — 1994-11-18