Historical clue formulations

• Ancient undeciphered writing system — 2020-11-13
• Ancient, undeciphered writing system — 2018-03-25
• As-yet-undeciphered Cretan script — 2018-02-11
• Ancient Cretan writing system — 2011-06-05
• Form of writing of ancient Crete — 2010-04-08
• Ancient Cretan writing system — 2008-07-23
• Ancient writing system — 2003-05-25