Historical clue formulations

• Published — 2020-10-03
• Public — 2018-11-28
• Public — 2014-09-19
• Publicly known — 2010-07-26
• Public — 2006-01-06
• Not easily denied — 2001-08-10
• Official — 1997-04-19
• Printed, as a quote — 1994-05-06